Critical magnetic fields for the magnetic Dirac-Coulomb operator. Maria J. ESTEBAN. C.N.R.S. and University Paris-Dauphine
|
|
- Ronald Shepherd
- 5 years ago
- Views:
Transcription
1 Critical magnetic fields for the magnetic Dirac-Coulomb operator Maria J. ESTEBAN C.N.R.S. and University Paris-Dauphine In collaboration with : Jean Dolbeault and Michael Loss e esteban/ John60, Edinburgh, June 2008 p.1/20
2 Physical problem Very strong magnetic fields could : destabilize matter, distorting atoms and molecules and forming polymer-like chains, facilitate the massive spontaneous appearance of positron-electron pairs, John60, Edinburgh, June 2008 p.2/20
3 Physical problem Very strong magnetic fields could : destabilize matter, distorting atoms and molecules and forming polymer-like chains, facilitate the massive spontaneous appearance of positron-electron pairs, the best candidate for this to happen are the magnetars (neutron stars), in which huge gravitational collapses would facilitate the appearance of huge magnetic fields, magnetars appear today as the most possible hypothesis for the so called gamma ray outbursts" John60, Edinburgh, June 2008 p.2/20
4 Physical problem Very strong magnetic fields could : destabilize matter, distorting atoms and molecules and forming polymer-like chains, facilitate the massive spontaneous appearance of positron-electron pairs, the best candidate for this to happen are the magnetars (neutron stars), in which huge gravitational collapses would facilitate the appearance of huge magnetic fields, magnetars appear today as the most possible hypothesis for the so called gamma ray outbursts" Earth s magnetic field = 1 Gauss Maximal field on Earth (MRI) = 1 Tesla = 10 4 Gauss Deatly field strength = 10 5 Tesla = 10 9 Gauss In new magnetars one expectes fields of Tesla. In recent theories, up to Tesla in the heart of the magnetars. John60, Edinburgh, June 2008 p.2/20
5 How to find models sustaining those huge magnetic fields? relativistic electronic models (Dirac) with homogeneous magnetic fields and abnomal magnetic moments (V. Canuto, H.-Y. Chiu; R.F. O Connell), hydrogenic atoms in a curved universe (Nowotny), intense electrostatic fields... (..., Brodsky, Mohr,...), heterogeneous magnetic fields (P. Achuthan et al), Excellent presentation in the works of R.C. Duncan and C. Thompson. John60, Edinburgh, June 2008 p.3/20
6 How to find models sustaining those huge magnetic fields? relativistic electronic models (Dirac) with homogeneous magnetic fields and abnomal magnetic moments (V. Canuto, H.-Y. Chiu; R.F. O Connell), hydrogenic atoms in a curved universe (Nowotny), intense electrostatic fields... (..., Brodsky, Mohr,...), heterogeneous magnetic fields (P. Achuthan et al), Excellent presentation in the works of R.C. Duncan and C. Thompson. Electrons submitted to an external electromagnetic field with homogeneous magnetic field. John60, Edinburgh, June 2008 p.3/20
7 How to find models sustaining those huge magnetic fields? relativistic electronic models (Dirac) with homogeneous magnetic fields and abnomal magnetic moments (V. Canuto, H.-Y. Chiu; R.F. O Connell), hydrogenic atoms in a curved universe (Nowotny), intense electrostatic fields... (..., Brodsky, Mohr,...), heterogeneous magnetic fields (P. Achuthan et al), Excellent presentation in the works of R.C. Duncan and C. Thompson. Electrons submitted to an external electromagnetic field with homogeneous magnetic field. REMARK. Same problem but very different situation in nonrelativistic quantum mechanics (with the Schrödinger and the Pauli operators). John60, Edinburgh, June 2008 p.3/20
8 The free Dirac operator H = i α + β, α 1, α 2, α 3, β M 4 4 (CI) (c = m = = 1) John60, Edinburgh, June 2008 p.4/20
9 The free Dirac operator H = i α + β, α 1, α 2, α 3, β M 4 4 (CI) (c = m = = 1)! β = I 0 0 I, α k = 0 σ k σ k 0! (k = 1,2,3) John60, Edinburgh, June 2008 p.4/20
10 The free Dirac operator H = i α + β, α 1, α 2, α 3, β M 4 4 (CI) (c = m = = 1)! β = I 0 0 I, α k = 0 σ k σ k 0! (k = 1,2,3)! σ 1 = !, σ 2 = 0 i i 0!, σ 3 = John60, Edinburgh, June 2008 p.4/20
11 The free Dirac operator H = i α + β, α 1, α 2, α 3, β M 4 4 (CI) (c = m = = 1)! β = I 0 0 I, α k = 0 σ k σ k 0! (k = 1,2,3)! σ 1 = !, σ 2 = 0 i i 0!, σ 3 = The two main properties of H are: H 2 = + I 1, σ(h) = (, 1] [1,+ ) John60, Edinburgh, June 2008 p.4/20
12 The free Dirac operator H = i α + β, α 1, α 2, α 3, β M 4 4 (CI) (c = m = = 1)! β = I 0 0 I, α k = 0 σ k σ k 0! (k = 1,2,3)! σ 1 = !, σ 2 = 0 i i 0!, σ 3 = The two main properties of H are: H 2 = + I 1, σ(h) = (, 1] [1,+ ) REMARK. H acts on functions ψ : IR 3 CI 4 John60, Edinburgh, June 2008 p.4/20
13 The free Dirac operator H = i α + β, α 1, α 2, α 3, β M 4 4 (CI) (c = m = = 1)! β = I 0 0 I, α k = 0 σ k σ k 0! (k = 1,2,3)! σ 1 = !, σ 2 = 0 i i 0!, σ 3 = The two main properties of H are: H 2 = + I 1, σ(h) = (, 1] [1,+ ) REMARK. H acts on functions ψ : IR 3 CI 4 QUESTION : Spectrum of H + V? John60, Edinburgh, June 2008 p.4/20
14 Eigenvalues of the Dirac operator without magnetic field Let us first consider the case of Coulomb potentials V ν := ν x, ν > 0. John60, Edinburgh, June 2008 p.5/20
15 Eigenvalues of the Dirac operator without magnetic field Let us first consider the case of Coulomb potentials V ν := ν x, ν > 0. H ν := H 0 ν x can be defined as a self-adjoint operator if 0 < ν < 1 (actually also (recent result) if ν = 1). John60, Edinburgh, June 2008 p.5/20
16 Eigenvalues of the Dirac operator without magnetic field Let us first consider the case of Coulomb potentials V ν := ν x, ν > 0. H ν := H 0 ν x can be defined as a self-adjoint operator if 0 < ν < 1 (actually also (recent result) if ν = 1). Its spectrum is given by: σ(h ν ) = (, 1] {λ ν 1, λ ν 2,... } [1, ) 0 < λ ν 1 = p 1 ν 2 λ ν k < 1. and the fact that λ 1 (H + V ν ) belongs to ( 1,1) is a kind of stability condition" for the electron. John60, Edinburgh, June 2008 p.5/20
17 Magnetic case I When a external magnetic field B is present, one considers a magnetic potential A B s. t. curla B = B. John60, Edinburgh, June 2008 p.6/20
18 Magnetic case I When a external magnetic field B is present, one considers a magnetic potential A B s. t. curla B = B. One has then to replace with B = ia B John60, Edinburgh, June 2008 p.6/20
19 Magnetic case I When a external magnetic field B is present, one considers a magnetic potential A B s. t. curla B = B. One has then to replace with B = ia B H B = i α B + β John60, Edinburgh, June 2008 p.6/20
20 Magnetic case I When a external magnetic field B is present, one considers a magnetic potential A B s. t. curla B = B. One has then to replace with B = ia B H B = i α B + β If we consider H B + V, if this operator is self-adjoint, if its essential spectrum is the set (, 1] [1,+ ) plus a discrete number of eigenvalues in the spectral gap ( 1, 1), John60, Edinburgh, June 2008 p.6/20
21 Magnetic case I When a external magnetic field B is present, one considers a magnetic potential A B s. t. curla B = B. One has then to replace with B = ia B H B = i α B + β If we consider H B + V, if this operator is self-adjoint, if its essential spectrum is the set (, 1] [1,+ ) plus a discrete number of eigenvalues in the spectral gap ( 1, 1), Does λ 1 (B, V ) ever leave the spectral gap ( 1,1)? and if yes, for which values of B? John60, Edinburgh, June 2008 p.6/20
22 Eigenvalues below / in the middle of the continuous spectrum. Spectrum of a self-adjoint operator A : John60, Edinburgh, June 2008 p.7/20
23 Eigenvalues below / in the middle of the continuous spectrum. Spectrum of a self-adjoint operator A : In the first case, λ 1 = min x 0 (Ax, x) x 2 John60, Edinburgh, June 2008 p.7/20
24 Eigenvalues below / in the middle of the continuous spectrum. Spectrum of a self-adjoint operator A : In the first case, λ 1 = min x 0 (Ax, x) x 2 In the second case, λ 1 = min max?? (Ax, x) x 2, λ 1 = max? min? (Ax, x) x 2,... John60, Edinburgh, June 2008 p.7/20
25 Abstract min-max theorem (Dolbeault, E., Séré, 2000) Let H be a Hilbert space and A : F = D(A) H H a self-adjoint operator defined on H. Let H +, H be two orthogonal subspaces of H satisfying: H = H + H. Define F ± := P ± F. John60, Edinburgh, June 2008 p.8/20
26 Abstract min-max theorem (Dolbeault, E., Séré, 2000) Let H be a Hilbert space and A : F = D(A) H H a self-adjoint operator defined on H. Let H +, H be two orthogonal subspaces of H satisfying: H = H + H. Define F ± := P ± F. (i) a := sup x F \{0} (x, Ax ) x 2 H < +. John60, Edinburgh, June 2008 p.8/20
27 Abstract min-max theorem (Dolbeault, E., Séré, 2000) Let H be a Hilbert space and A : F = D(A) H H a self-adjoint operator defined on H. Let H +, H be two orthogonal subspaces of H satisfying: H = H + H. Define F ± := P ± F. (i) a := sup x F \{0} (x, Ax ) x 2 H < +. Let c k = inf V subspace of F + dim V =k sup x (V F )\{0} (x, Ax) x 2 H, k 1. John60, Edinburgh, June 2008 p.8/20
28 Abstract min-max theorem (Dolbeault, E., Séré, 2000) Let H be a Hilbert space and A : F = D(A) H H a self-adjoint operator defined on H. Let H +, H be two orthogonal subspaces of H satisfying: H = H + H. Define F ± := P ± F. (i) a := sup x F \{0} (x, Ax ) x 2 H < +. Let c k = inf V subspace of F + dim V =k sup x (V F )\{0} (x, Ax) x 2 H, k 1. If (ii) c 1 > a, then c k is the k-th eigenvalue of A in the interval (a, b), where b = inf (σ ess (A) (a,+ )). John60, Edinburgh, June 2008 p.8/20
29 Application to magnetic Dirac operators I ψ : IR 3 C 4, ψ = «ϕ χ = ϕ 0 + «0 χ, ϕ, χ : IR 3 CI 2 John60, Edinburgh, June 2008 p.9/20
30 Application to magnetic Dirac operators I ψ : IR 3 C 4, ψ = «ϕ χ = ϕ 0 + «0 χ, ϕ, χ : IR 3 CI 2 Suppose that V satisfies lim V (x) = 0, x + ν x V 0, John60, Edinburgh, June 2008 p.9/20
31 Application to magnetic Dirac operators I «ϕ ϕ «0 ψ : IR 3 C 4, ψ = = + χ 0 χ, ϕ, χ : IR 3 CI 2 Suppose that V satisfies lim V (x) = 0, x + ν x V 0, Then, for all k 1, λ k (B, V ) = inf Y subspace of C o (IR3,CI 2 ) dimy =k sup ϕ Y \{0} sup ψ= ϕ χ χ C 0 (IR3,C 2 ) (ψ,(h B + V )ψ) (ψ, ψ) John60, Edinburgh, June 2008 p.9/20
32 Application to magnetic Dirac operators II The first eigenvalue of H B + V in the spectral hole ( 1,1) is given by λ 1 (B, V ) := inf sup ϕ 0 χ (ψ, (H B + V )ψ) (ψ, ψ), ψ = «ϕ χ John60, Edinburgh, June 2008 p.10/20
33 Application to magnetic Dirac operators II The first eigenvalue of H B + V in the spectral hole ( 1,1) is given by λ 1 (B, V ) := inf sup ϕ 0 χ (ψ, (H B + V )ψ) (ψ, ψ), ψ = «ϕ χ and λ B (ϕ) := sup ψ= ϕ χ (ψ, (H B + V )ψ) (ψ, ψ) χ C 0 (IR3,C 2 ) John60, Edinburgh, June 2008 p.10/20
34 Application to magnetic Dirac operators II The first eigenvalue of H B + V in the spectral hole ( 1,1) is given by λ 1 (B, V ) := inf sup ϕ 0 χ (ψ, (H B + V )ψ) (ψ, ψ), ψ = «ϕ χ and λ B (ϕ) := sup ψ= ϕ χ (ψ, (H B + V )ψ) (ψ, ψ) χ C 0 (IR3,C 2 ) is the unique real number λ such that σ B ϕ 2 IR 3 1 V + λ + (1 + V ) ϕ 2 dx = λ ϕ 2 dx. IR 3 John60, Edinburgh, June 2008 p.10/20
35 Application to magnetic Dirac operators III λ 1 (B, V ) = inf ϕ C 0 (IR3,C 2 ) ϕ 0 λ B (ϕ) John60, Edinburgh, June 2008 p.11/20
36 Application to magnetic Dirac operators III λ 1 (B, V ) = inf ϕ C 0 (IR3,C 2 ) ϕ 0 λ B (ϕ) σ B ϕ 2 IR 3 1 V + λ B (ϕ) + (V + 1 λb (ϕ)) ϕ 2 dx = 0 John60, Edinburgh, June 2008 p.11/20
37 Application to magnetic Dirac operators III λ 1 (B, V ) = inf ϕ C 0 (IR3,C 2 ) ϕ 0 λ B (ϕ) σ B ϕ 2 IR 3 1 V + λ B (ϕ) + (V + 1 λb (ϕ)) ϕ 2 dx = 0 IR3 (σ B )ϕ λ 1 (B, V ν ) + ν x dx + (1 λ 1 (B, V ν )) ϕ 2 dx IR 3 IR 3 ν x ϕ 2 dx John60, Edinburgh, June 2008 p.11/20
38 Application to magnetic Dirac operators III λ 1 (B, V ) = inf ϕ C 0 (IR3,C 2 ) ϕ 0 λ B (ϕ) σ B ϕ 2 IR 3 1 V + λ B (ϕ) + (V + 1 λb (ϕ)) ϕ 2 dx = 0 IR3 (σ B )ϕ λ 1 (B, V ν ) + ν x dx + (1 λ 1 (B, V ν )) ϕ 2 dx IR 3 IR 3 ν x ϕ 2 dx QUESTIONS : When do we have λ 1 (B, V ) ( 1,1)? If the eigenvalue λ 1 (B, V ) leaves the interval ( 1,1), when? John60, Edinburgh, June 2008 p.11/20
39 For a potential V = V ν, ν (0,1), 0 < B1 < B2 < B(ν) : B=0-1 1 B=B1 B=B2 B=B(ν) -1 1 John60, Edinburgh, June 2008 p.12/20
40 For a potential V = V ν, ν (0,1), 0 < B1 < B2 < B(ν) : B=0-1 1 B=B1 B=B2 B=B(ν) -1 1 DEFINITION: B(ν) := inf B > 0 : liminf bրb λ 1 (B, ν) = 1. John60, Edinburgh, June 2008 p.12/20
41 For a potential V = V ν, ν (0,1), 0 < B1 < B2 < B(ν) : B=0-1 1 B=B1 B=B2 B=B(ν) -1 1 DEFINITION: B(ν) := inf B > 0 : liminf bրb λ 1 (B, ν) = 1. TOOL TO ESTIMATE IT : IR3 (σ B )ϕ λ 1 (B, V ) V dx + (1 λ 1(B, V )) ϕ 2 dx IR 3 IR 3 V ϕ 2 dx John60, Edinburgh, June 2008 p.12/20
42 First results to estimate λ 1 (B,V ) For a given C, we have λ 1 (B, V ) < C if we can find a function ϕ s. t. ( ) IR3 (σ B ) ϕ C V dx + (1 C) ϕ 2 dx + IR 3 V ϕ 2 dx < 0 IR 3 John60, Edinburgh, June 2008 p.13/20
43 First results to estimate λ 1 (B,V ) For a given C, we have λ 1 (B, V ) < C if we can find a function ϕ s. t. ( ) IR3 (σ B ) ϕ C V dx + (1 C) ϕ 2 dx + IR 3 V ϕ 2 dx < 0 IR 3 And to verify that λ 1 (B, V ) > C it is enough to prove that for all ϕ ( ) IR3 (σ B )ϕ C V dx + (1 C) ϕ 2 dx + V ϕ 2 dx > 0 IR 3 IR 3 John60, Edinburgh, June 2008 p.13/20
44 First results to estimate λ 1 (B,V ) For a given C, we have λ 1 (B, V ) < C if we can find a function ϕ s. t. ( ) IR3 (σ B ) ϕ C V dx + (1 C) ϕ 2 dx + IR 3 V ϕ 2 dx < 0 IR 3 And to verify that λ 1 (B, V ) > C it is enough to prove that for all ϕ ( ) IR3 (σ B )ϕ C V dx + (1 C) ϕ 2 dx + V ϕ 2 dx > 0 IR 3 IR 3 and of course we are intersted in the case C = 1 in (*), and C = 1 in (**). John60, Edinburgh, June 2008 p.13/20
45 Some results (with J. Dolbeault and M. Loss) V ν = ν x, A B(x) := B 2 x 1 2 x 1 A, B(x) := A ; ν (0,1), B 0 B John60, Edinburgh, June 2008 p.14/20
46 Some results (with J. Dolbeault and M. Loss) V ν = ν x, A B(x) := B 2 x 1 2 x 1 A, B(x) := A ; ν (0,1), B 0 B For B = 0, λ 1 (0, V ν ) = 1 ν 2 ( 1,1) John60, Edinburgh, June 2008 p.14/20
47 Some results (with J. Dolbeault and M. Loss) V ν = ν x, A B(x) := B 2 x 1 2 x 1 A, B(x) := A ; ν (0,1), B 0 B For B = 0, λ 1 (0, V ν ) = 1 ν 2 ( 1,1) For all B 0, λ 1 (B, V ν ) < 1 John60, Edinburgh, June 2008 p.14/20
48 Some results (with J. Dolbeault and M. Loss) V ν = ν x, A B(x) := B 2 x 1 2 x 1 A, B(x) := A ; ν (0,1), B 0 B For B = 0, λ 1 (0, V ν ) = 1 ν 2 ( 1,1) For all B 0, λ 1 (B, V ν ) < 1 For all ν (0,1) there exists a critical field strength B(ν) such that λ 1 (B, V ν ) 1 if B B(ν) John60, Edinburgh, June 2008 p.14/20
49 Some results (with J. Dolbeault and M. Loss) V ν = ν x, A B(x) := B 2 x 1 2 x 1 A, B(x) := A ; ν (0,1), B 0 B For B = 0, λ 1 (0, V ν ) = 1 ν 2 ( 1,1) For all B 0, λ 1 (B, V ν ) < 1 For all ν (0,1) there exists a critical field strength B(ν) such that λ 1 (B, V ν ) 1 if B B(ν) lim ν 1 B(ν) > 0, lim ν 0 ν log B(ν) = π John60, Edinburgh, June 2008 p.14/20
50 Some results (with J. Dolbeault and M. Loss) V ν = ν x, A B(x) := B 2 x 1 2 x 1 A, B(x) := A ; ν (0,1), B 0 B For B = 0, λ 1 (0, V ν ) = 1 ν 2 ( 1,1) For all B 0, λ 1 (B, V ν ) < 1 For all ν (0,1) there exists a critical field strength B(ν) such that λ 1 (B, V ν ) 1 if B B(ν) lim ν 1 B(ν) > 0, lim ν 0 ν log B(ν) = π For ν small, the asymptotics of B(ν) can be calculated by an approximation in the first relativistic Landau level". John60, Edinburgh, June 2008 p.14/20
51 A better method to determine B(ν) IR3 (σ B )ϕ λ 1 (B, V ν ) + ν x dx + (1 λ 1 (B, V ν )) ϕ 2 dx IR 3 IR 3 ν x ϕ 2 dx John60, Edinburgh, June 2008 p.15/20
52 A better method to determine B(ν) IR3 (σ B )ϕ λ 1 (B, V ν ) + ν x dx + (1 λ 1 (B, V ν )) ϕ 2 dx IR 3 IR 3 ν x ϕ 2 dx and we are looking for B n B(ν) such that λ 1 (B n, ν) 1. If everything were compact, we would be able to pass to the limit and obtain IR3 x (σ B )ϕ 2 ν ν IR 3 x ϕ 2 dx + 2 ϕ 2 dx 0 IR 3 John60, Edinburgh, June 2008 p.15/20
53 A better method to determine B(ν) IR3 (σ B )ϕ λ 1 (B, V ν ) + ν x dx + (1 λ 1 (B, V ν )) ϕ 2 dx IR 3 IR 3 ν x ϕ 2 dx and we are looking for B n B(ν) such that λ 1 (B n, ν) 1. If everything were compact, we would be able to pass to the limit and obtain IR3 x (σ B )ϕ 2 ν ν IR 3 x ϕ 2 dx + 2 ϕ 2 dx 0 IR 3 Now define the functional E B,ν [φ] := IR 3 x ν (σ B) φ 2 dx IR 3 ν x φ 2 dx, If everything were compact and nice", µ B,ν + 2 = 0 ; µ B,ν := inf j E B,ν [φ]; ff ϕ 2 dx = 1. IR 3 John60, Edinburgh, June 2008 p.15/20
54 If everything were compact and nice", µ B,ν + 2 = 0 ; µ B,ν := inf j E B,ν [φ]; ff ϕ 2 dx = 1. IR 3 John60, Edinburgh, June 2008 p.16/20
55 If everything were compact and nice", µ B,ν + 2 = 0 ; µ B,ν := inf j E B,ν [φ]; ff ϕ 2 dx = 1. IR 3 A very nice property is that the scaling φ B := B 3/4 φ `B 1/2 x preserves the L 2 norm and E B,ν [φ B ] = B E 1,ν [φ]. John60, Edinburgh, June 2008 p.16/20
56 If everything were compact and nice", µ B,ν + 2 = 0 ; µ B,ν := inf j E B,ν [φ]; ff ϕ 2 dx = 1. IR 3 A very nice property is that the scaling φ B := B 3/4 φ `B 1/2 x preserves the L 2 norm and E B,ν [φ B ] = B E 1,ν [φ]. So, if we define µ(ν) := inf 0 φ C 0 (IR 3 ) we have µ B,ν = B µ(ν). E 1,ν [φ] φ 2 L 2 (R 3 ), THM : p B(ν) µ(ν) + 2 = 0 which is equivalent to B(ν) = 4 µ(ν) 2. John60, Edinburgh, June 2008 p.16/20
57 If everything were compact and nice", µ B,ν + 2 = 0 ; µ B,ν := inf j E B,ν [φ]; ff ϕ 2 dx = 1. IR 3 A very nice property is that the scaling φ B := B 3/4 φ `B 1/2 x preserves the L 2 norm and E B,ν [φ B ] = B E 1,ν [φ]. So, if we define µ(ν) := inf 0 φ C 0 (IR 3 ) we have µ B,ν = B µ(ν). E 1,ν [φ] φ 2 L 2 (R 3 ), THM : p B(ν) µ(ν) + 2 = 0 which is equivalent to B(ν) = 4 µ(ν) 2. PROPOSITION. On the interval (0, 1), the function ν µ(ν) is continuous, monotone decreasing and takes only negative real values. John60, Edinburgh, June 2008 p.16/20
58 If everything were compact and nice", µ B,ν + 2 = 0 ; µ B,ν := inf j E B,ν [φ]; ff ϕ 2 dx = 1. IR 3 A very nice property is that the scaling φ B := B 3/4 φ `B 1/2 x preserves the L 2 norm and E B,ν [φ B ] = B E 1,ν [φ]. So, if we define µ(ν) := inf 0 φ C 0 (IR 3 ) we have µ B,ν = B µ(ν). E 1,ν [φ] φ 2 L 2 (R 3 ), THM : p B(ν) µ(ν) + 2 = 0 which is equivalent to B(ν) = 4 µ(ν) 2. PROPOSITION. On the interval (0, 1), the function ν µ(ν) is continuous, monotone decreasing and takes only negative real values. Hence, B(ν) = 4 µ(ν) 2 implies that ν B(ν) is decreasing. John60, Edinburgh, June 2008 p.16/20
59 If everything were compact and nice", µ B,ν + 2 = 0 ; µ B,ν := inf j E B,ν [φ]; ff ϕ 2 dx = 1. IR 3 A very nice property is that the scaling φ B := B 3/4 φ `B 1/2 x preserves the L 2 norm and E B,ν [φ B ] = B E 1,ν [φ]. So, if we define µ(ν) := inf 0 φ C 0 (IR 3 ) we have µ B,ν = B µ(ν). E 1,ν [φ] φ 2 L 2 (R 3 ), THM : p B(ν) µ(ν) + 2 = 0 which is equivalent to B(ν) = 4 µ(ν) 2. PROPOSITION. On the interval (0, 1), the function ν µ(ν) is continuous, monotone decreasing and takes only negative real values. Hence, B(ν) = 4 µ(ν) 2 implies that ν B(ν) is decreasing. Now we would like to estimate B(ν). This can be done analytically or/and numerically. As we said before, analytically we have some estimates for ν close to 0 and to 1. John60, Edinburgh, June 2008 p.16/20
60 The Landau level approximation Consider the class of functions A(B, ν) : φ l := B 2 π 2 l l! (x 2 + i x 1 ) l e B s2 /4 1, l N, s 2 = x x 2 2, 0 where the coefficients depend only on x 3, i.e., φ(x) = X l f l (x 3 ) φ l (x 1, x 2 ), z := x 3. John60, Edinburgh, June 2008 p.17/20
61 The Landau level approximation Consider the class of functions A(B, ν) : φ l := B 2 π 2 l l! (x 2 + i x 1 ) l e B s2 /4 1, l N, s 2 = x x 2 2, 0 where the coefficients depend only on x 3, i.e., φ(x) = X l f l (x 3 ) φ l (x 1, x 2 ), z := x 3. Now, we shall restrict the functional E B,ν to the first Landau level. In this framework, that we shall call the Landau level ansatz, we also define a critical field by B L (ν) := inf j ff B > 0 : liminf bրb λl 1 (b, ν) = 1, where λ L 1 (b, ν) := inf λ[φ, b, ν]. φ A(B,ν), Π φ=0 John60, Edinburgh, June 2008 p.17/20
62 THEOREM : B L (ν) = 4 µ L (ν) 2, where µ L (ν) := inf f L ν [f] f 2 L 2 (R + ) < 0. John60, Edinburgh, June 2008 p.18/20
63 THEOREM : B L (ν) = 4 µ L (ν) 2, where µ L (ν) := inf f L ν [f] f 2 L 2 (R + ) < 0. L ν [f] = E 1,ν [φ f ], φ f (x) = f(z) e s2 / π 0 John60, Edinburgh, June 2008 p.18/20
64 THEOREM : B L (ν) = 4 µ L (ν) 2, where µ L (ν) := inf f L ν [f] f 2 L 2 (R + ) < 0. L ν [f] = E 1,ν [φ f ], φ f (x) = f(z) e s2 / π 0 L ν [f] = 1 ν 0 b(z) f 2 dz ν 0 a(z) f 2 dz b(z) = 0 p s 2 + z 2 s e s2 /2 ds and a(z) = 0 s e s2 /2 s 2 + z 2 ds. John60, Edinburgh, June 2008 p.18/20
65 THEOREM : B L (ν) = 4 µ L (ν) 2, where µ L (ν) := inf f L ν [f] f 2 L 2 (R + ) < 0. L ν [f] = E 1,ν [φ f ], φ f (x) = f(z) e s2 / π 0 L ν [f] = 1 ν 0 b(z) f 2 dz ν 0 a(z) f 2 dz b(z) = 0 p s 2 + z 2 s e s2 /2 ds and a(z) = 0 s e s2 /2 s 2 + z 2 ds. COROLLARY. µ(ν) µ L (ν) < 0 = B(ν) B L (ν). John60, Edinburgh, June 2008 p.18/20
66 Final results THEOREM. For ν (0, ν 0 ), B L (ν + ν 3/2 ) B(ν) B L (ν) John60, Edinburgh, June 2008 p.19/20
67 Final results THEOREM. For ν (0, ν 0 ), B L (ν + ν 3/2 ) B(ν) B L (ν) THEOREM. lim ν log B L (ν) = π. ν 0 COROLLARY. lim ν log B(ν) = π. ν 0 John60, Edinburgh, June 2008 p.19/20
68 Final results THEOREM. For ν (0, ν 0 ), B L (ν + ν 3/2 ) B(ν) B L (ν) THEOREM. lim ν log B L (ν) = π. ν 0 COROLLARY. lim ν log B(ν) = π. ν 0 B B(ν) B L (ν) ν John60, Edinburgh, June 2008 p.19/20
69 Final results THEOREM. For ν (0, ν 0 ), B L (ν + ν 3/2 ) B(ν) B L (ν) THEOREM. lim ν log B L (ν) = π. ν 0 COROLLARY. lim ν log B(ν) = π. ν 0 B B(ν) B L (ν) ν NUMERICAL OBSERVATION. For ν near 1, B(ν) is below B L (ν) by 30%. John60, Edinburgh, June 2008 p.19/20
70 Dear John : even if late, John60, Edinburgh, June 2008 p.20/20
71 Dear John : even if late, BON ANNIVERSAIRE! HAPPY BIRTHDAY! John60, Edinburgh, June 2008 p.20/20
SELF-ADJOINTNESS OF DIRAC OPERATORS VIA HARDY-DIRAC INEQUALITIES
SELF-ADJOINTNESS OF DIRAC OPERATORS VIA HARDY-DIRAC INEQUALITIES MARIA J. ESTEBAN 1 AND MICHAEL LOSS Abstract. Distinguished selfadjoint extension of Dirac operators are constructed for a class of potentials
More information76 Griesemer, Lewis, Siedentop the Dirac operator in the gap with the number of negative eigenvalues of a corresponding Schrodinger operator (see [5])
Doc. Math. J. DMV 75 A Minimax Principle for Eigenvalues in Spectral Gaps: Dirac Operators with Coulomb Potentials Marcel Griesemer, Roger T. Lewis, Heinz Siedentop Received: March 9, 999 Communicated
More informationarxiv:math/ v1 [math.ap] 2 Jul 2006
arxiv:math/677v1 [math.ap] Jul 6 Relativistic hydrogenic atoms in strong magnetic fields Jean Dolbeault 1, Maria J. Esteban 1, Michael Loss 1 Ceremade (UMR CNRS no. 7534), Université Paris Dauphine, Place
More informationQuantum Field Theory
Quantum Field Theory PHYS-P 621 Radovan Dermisek, Indiana University Notes based on: M. Srednicki, Quantum Field Theory 1 Attempts at relativistic QM based on S-1 A proper description of particle physics
More informationQuantum Field Theory
Quantum Field Theory PHYS-P 621 Radovan Dermisek, Indiana University Notes based on: M. Srednicki, Quantum Field Theory 1 Attempts at relativistic QM based on S-1 A proper description of particle physics
More informationQuantum Field Theory
Quantum Field Theory PHYS-P 621 Radovan Dermisek, Indiana University Notes based on: M. Srednicki, Quantum Field Theory 1 Attempts at relativistic QM based on S-1 A proper description of particle physics
More informationEIGENFUNCTIONS OF DIRAC OPERATORS AT THE THRESHOLD ENERGIES
EIGENFUNCTIONS OF DIRAC OPERATORS AT THE THRESHOLD ENERGIES TOMIO UMEDA Abstract. We show that the eigenspaces of the Dirac operator H = α (D A(x)) + mβ at the threshold energies ±m are coincide with the
More informationApplied Analysis (APPM 5440): Final exam 1:30pm 4:00pm, Dec. 14, Closed books.
Applied Analysis APPM 44: Final exam 1:3pm 4:pm, Dec. 14, 29. Closed books. Problem 1: 2p Set I = [, 1]. Prove that there is a continuous function u on I such that 1 ux 1 x sin ut 2 dt = cosx, x I. Define
More informationSpectral Pollution and How to Avoid It (With Applications to Dirac and Periodic Schrödinger Operators)
Spectral Pollution and How to Avoid It With Applications to Dirac and Periodic Schrödinger Operators Mathieu Lewin, Eric Séré To cite this version: Mathieu Lewin, Eric Séré. Spectral Pollution and How
More informationHilbert space methods for quantum mechanics. S. Richard
Hilbert space methods for quantum mechanics S. Richard Spring Semester 2016 2 Contents 1 Hilbert space and bounded linear operators 5 1.1 Hilbert space................................ 5 1.2 Vector-valued
More informationMathematical Analysis of a Generalized Chiral Quark Soliton Model
Symmetry, Integrability and Geometry: Methods and Applications Vol. 2 (2006), Paper 018, 12 pages Mathematical Analysis of a Generalized Chiral Quark Soliton Model Asao ARAI Department of Mathematics,
More informationMath Theory of Partial Differential Equations Lecture 3-2: Spectral properties of the Laplacian. Bessel functions.
Math 412-501 Theory of Partial ifferential Equations Lecture 3-2: Spectral properties of the Laplacian. Bessel functions. Eigenvalue problem: 2 φ + λφ = 0 in, ( αφ + β φ ) n = 0, where α, β are piecewise
More informationFUNCTIONAL ANALYSIS LECTURE NOTES: WEAK AND WEAK* CONVERGENCE
FUNCTIONAL ANALYSIS LECTURE NOTES: WEAK AND WEAK* CONVERGENCE CHRISTOPHER HEIL 1. Weak and Weak* Convergence of Vectors Definition 1.1. Let X be a normed linear space, and let x n, x X. a. We say that
More informationHILBERT SPACES AND THE RADON-NIKODYM THEOREM. where the bar in the first equation denotes complex conjugation. In either case, for any x V define
HILBERT SPACES AND THE RADON-NIKODYM THEOREM STEVEN P. LALLEY 1. DEFINITIONS Definition 1. A real inner product space is a real vector space V together with a symmetric, bilinear, positive-definite mapping,
More informationAttempts at relativistic QM
Attempts at relativistic QM based on S-1 A proper description of particle physics should incorporate both quantum mechanics and special relativity. However historically combining quantum mechanics and
More informationhere, this space is in fact infinite-dimensional, so t σ ess. Exercise Let T B(H) be a self-adjoint operator on an infinitedimensional
15. Perturbations by compact operators In this chapter, we study the stability (or lack thereof) of various spectral properties under small perturbations. Here s the type of situation we have in mind:
More informationMolecular propagation through crossings and avoided crossings of electron energy levels
Molecular propagation through crossings and avoided crossings of electron energy levels George A. Hagedorn Department of Mathematics and Center for Statistical Mechanics and Mathematical Physics Virginia
More informationControllability of linear PDEs (I): The wave equation
Controllability of linear PDEs (I): The wave equation M. González-Burgos IMUS, Universidad de Sevilla Doc Course, Course 2, Sevilla, 2018 Contents 1 Introduction. Statement of the problem 2 Distributed
More informationSymmetry breaking in Caffarelli-Kohn-Nirenberg inequalities
Symmetry breaking in Caffarelli-Kohn-Nirenberg inequalities p. 1/47 Symmetry breaking in Caffarelli-Kohn-Nirenberg inequalities Jean Dolbeault dolbeaul@ceremade.dauphine.fr CEREMADE CNRS & Université Paris-Dauphine
More informationPhysics 107 Final Exam May 6, Your Name: 1. Questions
Physics 107 Final Exam May 6, 1996 Your Name: 1. Questions 1. 9. 17. 5.. 10. 18. 6. 3. 11. 19. 7. 4. 1. 0. 8. 5. 13. 1. 9. 6. 14.. 30. 7. 15. 3. 8. 16. 4.. Problems 1. 4. 7. 10. 13.. 5. 8. 11. 14. 3. 6.
More informationGeneral Physics - E&M (PHY 1308) - Lecture Notes. General Physics - E&M (PHY 1308) Lecture Notes
General Physics - E&M (PHY 1308) Lecture Notes Lecture 014: RC Circuits and Magnetism SteveSekula, 21 March 2011 (created 7 March 2011) Capacitors in Circuits no tags What happens if we add a capacitor
More informationSPECTRAL THEOREM FOR COMPACT SELF-ADJOINT OPERATORS
SPECTRAL THEOREM FOR COMPACT SELF-ADJOINT OPERATORS G. RAMESH Contents Introduction 1 1. Bounded Operators 1 1.3. Examples 3 2. Compact Operators 5 2.1. Properties 6 3. The Spectral Theorem 9 3.3. Self-adjoint
More informationOn Schrödinger equations with inverse-square singular potentials
On Schrödinger equations with inverse-square singular potentials Veronica Felli Dipartimento di Statistica University of Milano Bicocca veronica.felli@unimib.it joint work with Elsa M. Marchini and Susanna
More informationAsymptotic distribution of eigenvalues of Laplace operator
Asymptotic distribution of eigenvalues of Laplace operator 23.8.2013 Topics We will talk about: the number of eigenvalues of Laplace operator smaller than some λ as a function of λ asymptotic behaviour
More informationIntroduction to Electronic Structure Theory
Introduction to Electronic Structure Theory C. David Sherrill School of Chemistry and Biochemistry Georgia Institute of Technology June 2002 Last Revised: June 2003 1 Introduction The purpose of these
More informationPerturbation Theory for Self-Adjoint Operators in Krein spaces
Perturbation Theory for Self-Adjoint Operators in Krein spaces Carsten Trunk Institut für Mathematik, Technische Universität Ilmenau, Postfach 10 05 65, 98684 Ilmenau, Germany E-mail: carsten.trunk@tu-ilmenau.de
More informationRolle s Theorem for Polynomials of Degree Four in a Hilbert Space 1
Journal of Mathematical Analysis and Applications 265, 322 33 (2002) doi:0.006/jmaa.200.7708, available online at http://www.idealibrary.com on Rolle s Theorem for Polynomials of Degree Four in a Hilbert
More informationErrata Applied Analysis
Errata Applied Analysis p. 9: line 2 from the bottom: 2 instead of 2. p. 10: Last sentence should read: The lim sup of a sequence whose terms are bounded from above is finite or, and the lim inf of a sequence
More informationThe Twisting Trick for Double Well Hamiltonians
Commun. Math. Phys. 85, 471-479 (1982) Communications in Mathematical Physics Springer-Verlag 1982 The Twisting Trick for Double Well Hamiltonians E. B. Davies Department of Mathematics, King's College,
More informationFree energy estimates for the two-dimensional Keller-Segel model
Free energy estimates for the two-dimensional Keller-Segel model dolbeaul@ceremade.dauphine.fr CEREMADE CNRS & Université Paris-Dauphine in collaboration with A. Blanchet (CERMICS, ENPC & Ceremade) & B.
More informationThe following definition is fundamental.
1. Some Basics from Linear Algebra With these notes, I will try and clarify certain topics that I only quickly mention in class. First and foremost, I will assume that you are familiar with many basic
More informationThe Stellar Black Hole
The Stellar Black Hole Kenneth Dalton e-mail: kxdalton@yahoo.com Abstract A black hole model is proposed in which a neutron star is surrounded by a neutral gas of electrons and positrons. The gas is in
More information1 Fourier Transformation.
Fourier Transformation. Before stating the inversion theorem for the Fourier transformation on L 2 (R ) recall that this is the space of Lebesgue measurable functions whose absolute value is square integrable.
More informationYANG-MILLS GAUGE INVARIANT THEORY FOR SPACE CURVED ELECTROMAGNETIC FIELD. Algirdas Antano Maknickas 1. September 3, 2014
YANG-MILLS GAUGE INVARIANT THEORY FOR SPACE CURVED ELECTROMAGNETIC FIELD Algirdas Antano Maknickas Institute of Mechanical Sciences, Vilnius Gediminas Technical University September 3, 04 Abstract. It
More informationI teach myself... Hilbert spaces
I teach myself... Hilbert spaces by F.J.Sayas, for MATH 806 November 4, 2015 This document will be growing with the semester. Every in red is for you to justify. Even if we start with the basic definition
More informationAnalysis Preliminary Exam Workshop: Hilbert Spaces
Analysis Preliminary Exam Workshop: Hilbert Spaces 1. Hilbert spaces A Hilbert space H is a complete real or complex inner product space. Consider complex Hilbert spaces for definiteness. If (, ) : H H
More informationAN EFFECTIVE METRIC ON C(H, K) WITH NORMAL STRUCTURE. Mona Nabiei (Received 23 June, 2015)
NEW ZEALAND JOURNAL OF MATHEMATICS Volume 46 (2016), 53-64 AN EFFECTIVE METRIC ON C(H, K) WITH NORMAL STRUCTURE Mona Nabiei (Received 23 June, 2015) Abstract. This study first defines a new metric with
More informationA Brief Introduction to Functional Analysis
A Brief Introduction to Functional Analysis Sungwook Lee Department of Mathematics University of Southern Mississippi sunglee@usm.edu July 5, 2007 Definition 1. An algebra A is a vector space over C with
More information2.3 Variational form of boundary value problems
2.3. VARIATIONAL FORM OF BOUNDARY VALUE PROBLEMS 21 2.3 Variational form of boundary value problems Let X be a separable Hilbert space with an inner product (, ) and norm. We identify X with its dual X.
More informationHOMEOMORPHISMS AND FREDHOLM THEORY FOR PERTURBATIONS OF NONLINEAR FREDHOLM MAPS OF INDEX ZERO WITH APPLICATIONS
Electronic Journal of Differential Equations, Vol. 2009(2009), No. 113, pp. 1 26. ISSN: 1072-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu HOMEOMORPHISMS
More informationψ s a ˆn a s b ˆn b ψ Hint: Because the state is spherically symmetric the answer can depend only on the angle between the two directions.
1. Quantum Mechanics (Fall 2004) Two spin-half particles are in a state with total spin zero. Let ˆn a and ˆn b be unit vectors in two arbitrary directions. Calculate the expectation value of the product
More informationSpectral asymptotics of Pauli operators and orthogonal polynomials in complex domains
Spectral asymptotics of Pauli operators and orthogonal polynomials in complex domains N. Filonov and A. Pushnitski Abstract We consider the spectrum of a two-dimensional Pauli operator with a compactly
More informationProblem Set 5 Solutions
Chemistry 362 Dr Jean M Standard Problem Set 5 Solutions ow many vibrational modes do the following molecules or ions possess? [int: Drawing Lewis structures may be useful in some cases] In all of the
More informationYour first day at work MATH 806 (Fall 2015)
Your first day at work MATH 806 (Fall 2015) 1. Let X be a set (with no particular algebraic structure). A function d : X X R is called a metric on X (and then X is called a metric space) when d satisfies
More informationEigenvalues of Robin Laplacians on infinite sectors and application to polygons
Eigenvalues of Robin Laplacians on infinite sectors and application to polygons Magda Khalile (joint work with Konstantin Pankrashkin) Université Paris Sud /25 Robin Laplacians on infinite sectors 1 /
More informationAnderson Localization on the Sierpinski Gasket
Anderson Localization on the Sierpinski Gasket G. Mograby 1 M. Zhang 2 1 Department of Physics Technical University of Berlin, Germany 2 Department of Mathematics Jacobs University, Germany 5th Cornell
More informationVector and Scalar Potentials
APPENDIX G Vector and Scalar Potentials Maxwell Equations The electromagnetic field is described by two vector fields: the electric field intensity E and the magnetic field intensity H, which both depend
More informationNonlinear stabilization via a linear observability
via a linear observability Kaïs Ammari Department of Mathematics University of Monastir Joint work with Fathia Alabau-Boussouira Collocated feedback stabilization Outline 1 Introduction and main result
More informationArguments Supporting Model of Three-Positron Structure of the Proton
Adv. Studies Theor. Phys., Vol. 5, 2011, no. 2, 63-75 Arguments Supporting Model of Three-Positron Structure of the Proton Jaros law Kaczmarek Institute of Fluid-Flow Machinery Polish Academy of Sciences
More informationLecture 10. The Dirac equation. WS2010/11: Introduction to Nuclear and Particle Physics
Lecture 10 The Dirac equation WS2010/11: Introduction to Nuclear and Particle Physics The Dirac equation The Dirac equation is a relativistic quantum mechanical wave equation formulated by British physicist
More informationStabilization of persistently excited linear systems
Stabilization of persistently excited linear systems Yacine Chitour Laboratoire des signaux et systèmes & Université Paris-Sud, Orsay Exposé LJLL Paris, 28/9/2012 Stabilization & intermittent control Consider
More informationRapidly Rotating Bose-Einstein Condensates in Strongly Anharmonic Traps. Michele Correggi. T. Rindler-Daller, J. Yngvason math-ph/
Rapidly Rotating Bose-Einstein Condensates in Strongly Anharmonic Traps Michele Correggi Erwin Schrödinger Institute, Vienna T. Rindler-Daller, J. Yngvason math-ph/0606058 in collaboration with preprint
More informationUNBOUNDED OPERATORS ON HILBERT SPACES. Let X and Y be normed linear spaces, and suppose A : X Y is a linear map.
UNBOUNDED OPERATORS ON HILBERT SPACES EFTON PARK Let X and Y be normed linear spaces, and suppose A : X Y is a linear map. Define { } Ax A op = sup x : x 0 = { Ax : x 1} = { Ax : x = 1} If A
More informationCommutative Banach algebras 79
8. Commutative Banach algebras In this chapter, we analyze commutative Banach algebras in greater detail. So we always assume that xy = yx for all x, y A here. Definition 8.1. Let A be a (commutative)
More informationCompact operators on Banach spaces
Compact operators on Banach spaces Jordan Bell jordan.bell@gmail.com Department of Mathematics, University of Toronto November 12, 2017 1 Introduction In this note I prove several things about compact
More informationTHE DIRAC EQUATION (A REVIEW) We will try to find the relativistic wave equation for a particle.
THE DIRAC EQUATION (A REVIEW) We will try to find the relativistic wave equation for a particle. First, we introduce four dimensional notation for a vector by writing x µ = (x, x 1, x 2, x 3 ) = (ct, x,
More informationACCUMULATION OF DISCRETE EIGENVALUES OF THE RADIAL DIRAC OPERATOR
ACCUMULATION OF DISCRETE EIGENVALUES OF THE RADIAL DIRAC OPERATOR MARCEL GRIESEMER AND JOSEPH LUTGEN Abstract. For bounded potentials which behave like cx γ at infinity we investigate whether discrete
More informationG : Quantum Mechanics II
G5.666: Quantum Mechanics II Notes for Lecture 5 I. REPRESENTING STATES IN THE FULL HILBERT SPACE Given a representation of the states that span the spin Hilbert space, we now need to consider the problem
More informationSPECTRAL THEOREM FOR SYMMETRIC OPERATORS WITH COMPACT RESOLVENT
SPECTRAL THEOREM FOR SYMMETRIC OPERATORS WITH COMPACT RESOLVENT Abstract. These are the letcure notes prepared for the workshop on Functional Analysis and Operator Algebras to be held at NIT-Karnataka,
More informationSPECTRAL THEORY EVAN JENKINS
SPECTRAL THEORY EVAN JENKINS Abstract. These are notes from two lectures given in MATH 27200, Basic Functional Analysis, at the University of Chicago in March 2010. The proof of the spectral theorem for
More information5 Compact linear operators
5 Compact linear operators One of the most important results of Linear Algebra is that for every selfadjoint linear map A on a finite-dimensional space, there exists a basis consisting of eigenvectors.
More informationContinuous Functions on Metric Spaces
Continuous Functions on Metric Spaces Math 201A, Fall 2016 1 Continuous functions Definition 1. Let (X, d X ) and (Y, d Y ) be metric spaces. A function f : X Y is continuous at a X if for every ɛ > 0
More informationFilters in Analysis and Topology
Filters in Analysis and Topology David MacIver July 1, 2004 Abstract The study of filters is a very natural way to talk about convergence in an arbitrary topological space, and carries over nicely into
More informationNONINTEGER FLUXES, DOLBEAULT COMPLEXES, AND SUPERSYMMETRIC QUANTUM MECHANICS. based on [ ] and [ ] Hannover, August 1, 2011
NONINTEGER FLUXES, DOLBEAULT COMPLEXES, AND SUPERSYMMETRIC QUANTUM MECHANICS based on [1104.3986] and [1105.3935] Hannover, August 1, 2011 WHAT IS WRONG WITH NONINTEGER FLUX? Quantization of Dirac monopole
More informationMaxwell s equations in Carnot groups
Maxwell s equations in Carnot groups B. Franchi (U. Bologna) INDAM Meeting on Geometric Control and sub-riemannian Geometry Cortona, May 21-25, 2012 in honor of Andrey Agrachev s 60th birthday Researches
More informationTD 1: Hilbert Spaces and Applications
Université Paris-Dauphine Functional Analysis and PDEs Master MMD-MA 2017/2018 Generalities TD 1: Hilbert Spaces and Applications Exercise 1 (Generalized Parallelogram law). Let (H,, ) be a Hilbert space.
More informationA note on adiabatic theorem for Markov chains and adiabatic quantum computation. Yevgeniy Kovchegov Oregon State University
A note on adiabatic theorem for Markov chains and adiabatic quantum computation Yevgeniy Kovchegov Oregon State University Introduction Max Born and Vladimir Fock in 1928: a physical system remains in
More informationLecture 19: Building Atoms and Molecules
Lecture 19: Building Atoms and Molecules +e r n = 3 n = 2 n = 1 +e +e r y even Lecture 19, p 1 Today Nuclear Magnetic Resonance Using RF photons to drive transitions between nuclear spin orientations in
More informationScott Hughes 12 May Massachusetts Institute of Technology Department of Physics Spring 2005
Scott Hughes 12 May 2005 24.1 Gravity? Massachusetts Institute of Technology Department of Physics 8.022 Spring 2005 Lecture 24: A (very) brief introduction to general relativity. The Coulomb interaction
More informationFunctional Analysis Review
Outline 9.520: Statistical Learning Theory and Applications February 8, 2010 Outline 1 2 3 4 Vector Space Outline A vector space is a set V with binary operations +: V V V and : R V V such that for all
More informationHilbert Space Methods Used in a First Course in Quantum Mechanics A Recap WHY ARE WE HERE? QUOTE FROM WIKIPEDIA
Hilbert Space Methods Used in a First Course in Quantum Mechanics A Recap Larry Susanka Table of Contents Why Are We Here? The Main Vector Spaces Notions of Convergence Topological Vector Spaces Banach
More informationRenormalization according to Wilson
Renormalization according to Wilson Suppose we have integrated out fields with momenta > Λ. We have renormalized fields (at the scale Λ) and g(λ). Now we want to integrate out also fields with momenta
More informationThe Riemann Hypothesis Project summary
The Riemann Hypothesis Project summary The spectral theory of the vibrating string is applied to a proof of the Riemann hypothesis for the Hecke zeta functions in the theory of modular forms. A proof of
More informationLecture 19: Building Atoms and Molecules
Lecture 19: Building Atoms and Molecules +e r n = 3 n = 2 n = 1 +e +e r ψ even Lecture 19, p 1 Today Nuclear Magnetic Resonance Using RF photons to drive transitions between nuclear spin orientations in
More informationFormalism of Quantum Mechanics
Dirac Notation Formalism of Quantum Mechanics We can use a shorthand notation for the normalization integral I = "! (r,t) 2 dr = "! * (r,t)! (r,t) dr =!! The state! is called a ket. The complex conjugate
More informationNon-relativistic Limit of Dirac Equations in Gravitational Field and Quantum Effects of Gravity
Commun. Theor. Phys. Beijing, China) 45 26) pp. 452 456 c International Academic Publishers Vol. 45, No. 3, March 15, 26 Non-relativistic Limit of Dirac Equations in Gravitational Field and Quantum Effects
More information16 1 Basic Facts from Functional Analysis and Banach Lattices
16 1 Basic Facts from Functional Analysis and Banach Lattices 1.2.3 Banach Steinhaus Theorem Another fundamental theorem of functional analysis is the Banach Steinhaus theorem, or the Uniform Boundedness
More informationSelf-adjoint extensions of symmetric operators
Self-adjoint extensions of symmetric operators Simon Wozny Proseminar on Linear Algebra WS216/217 Universität Konstanz Abstract In this handout we will first look at some basics about unbounded operators.
More informationApplication of the ECE Lemma to the fermion and electromagnetic fields
Chapter 8 Application of the ECE Lemma to the fermion and electromagnetic fields Abstract (Paper 62) by Myron W. Evans Alpha Institute for Advanced Study (AIAS). (emyrone@aol.com, www.aias.us, www.atomicprecision.com)
More informationGround State Patterns of Spin-1 Bose-Einstein condensation via Γ-convergence Theory
Ground State Patterns of Spin-1 Bose-Einstein condensation via Γ-convergence Theory Tien-Tsan Shieh joint work with I-Liang Chern and Chiu-Fen Chou National Center of Theoretical Science December 19, 2015
More informationMATH MEASURE THEORY AND FOURIER ANALYSIS. Contents
MATH 3969 - MEASURE THEORY AND FOURIER ANALYSIS ANDREW TULLOCH Contents 1. Measure Theory 2 1.1. Properties of Measures 3 1.2. Constructing σ-algebras and measures 3 1.3. Properties of the Lebesgue measure
More information1 The postulates of quantum mechanics
1 The postulates of quantum mechanics The postulates of quantum mechanics were derived after a long process of trial and error. These postulates provide a connection between the physical world and the
More informationEXISTENCE OF SOLUTIONS TO ASYMPTOTICALLY PERIODIC SCHRÖDINGER EQUATIONS
Electronic Journal of Differential Equations, Vol. 017 (017), No. 15, pp. 1 7. ISSN: 107-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu EXISTENCE OF SOLUTIONS TO ASYMPTOTICALLY PERIODIC
More informationWave function methods for the electronic Schrödinger equation
Wave function methods for the electronic Schrödinger equation Zürich 2008 DFG Reseach Center Matheon: Mathematics in Key Technologies A7: Numerical Discretization Methods in Quantum Chemistry DFG Priority
More informationStability of Relativistic Matter with Magnetic Fields for Nuclear Charges up to the Critical Value
Commun. Math. Phys. 275, 479 489 (2007) Digital Object Identifier (DOI) 10.1007/s00220-007-0307-2 Communications in Mathematical Physics Stability of Relativistic Matter with Magnetic Fields for Nuclear
More informationSpectral analysis of two doubly infinite Jacobi operators
Spectral analysis of two doubly infinite Jacobi operators František Štampach jointly with Mourad E. H. Ismail Stockholm University Spectral Theory and Applications conference in memory of Boris Pavlov
More informationSPECTRAL PROPERTIES OF JACOBI MATRICES OF CERTAIN BIRTH AND DEATH PROCESSES
J. OPERATOR THEORY 56:2(2006), 377 390 Copyright by THETA, 2006 SPECTRAL PROPERTIES OF JACOBI MATRICES OF CERTAIN BIRTH AND DEATH PROCESSES JAOUAD SAHBANI Communicated by Şerban Strătilă ABSTRACT. We show
More informationStabilization of Distributed Parameter Systems by State Feedback with Positivity Constraints
Stabilization of Distributed Parameter Systems by State Feedback with Positivity Constraints Joseph Winkin Namur Center of Complex Systems (naxys) and Dept. of Mathematics, University of Namur, Belgium
More informationProve that this gives a bounded linear operator T : X l 1. (6p) Prove that T is a bounded linear operator T : l l and compute (5p)
Uppsala Universitet Matematiska Institutionen Andreas Strömbergsson Prov i matematik Funktionalanalys Kurs: F3B, F4Sy, NVP 2006-03-17 Skrivtid: 9 14 Tillåtna hjälpmedel: Manuella skrivdon, Kreyszigs bok
More informationBASIC FUNCTIONAL ANALYSIS FOR THE OPTIMIZATION OF PARTIAL DIFFERENTIAL EQUATIONS
BASIC FUNCTIONAL ANALYSIS FOR THE OPTIMIZATION OF PARTIAL DIFFERENTIAL EQUATIONS S. VOLKWEIN Abstract. Infinite-dimensional optimization requires among other things many results from functional analysis.
More informationTrace Class Operators and Lidskii s Theorem
Trace Class Operators and Lidskii s Theorem Tom Phelan Semester 2 2009 1 Introduction The purpose of this paper is to provide the reader with a self-contained derivation of the celebrated Lidskii Trace
More informationCompact symetric bilinear forms
Compact symetric bilinear forms Mihai Mathematics Department UC Santa Barbara IWOTA 2006 IWOTA 2006 Compact forms [1] joint work with: J. Danciger (Stanford) S. Garcia (Pomona
More informationare Banach algebras. f(x)g(x) max Example 7.4. Similarly, A = L and A = l with the pointwise multiplication
7. Banach algebras Definition 7.1. A is called a Banach algebra (with unit) if: (1) A is a Banach space; (2) There is a multiplication A A A that has the following properties: (xy)z = x(yz), (x + y)z =
More informationQuasi-conformal maps and Beltrami equation
Chapter 7 Quasi-conformal maps and Beltrami equation 7. Linear distortion Assume that f(x + iy) =u(x + iy)+iv(x + iy) be a (real) linear map from C C that is orientation preserving. Let z = x + iy and
More information4 Linear operators and linear functionals
4 Linear operators and linear functionals The next section is devoted to studying linear operators between normed spaces. Definition 4.1. Let V and W be normed spaces over a field F. We say that T : V
More informationCompression, Matrix Range and Completely Positive Map
Compression, Matrix Range and Completely Positive Map Iowa State University Iowa-Nebraska Functional Analysis Seminar November 5, 2016 Definitions and notations H, K : Hilbert space. If dim H = n
More informationSPECTRAL PROPERTIES OF THE LAPLACIAN ON BOUNDED DOMAINS
SPECTRAL PROPERTIES OF THE LAPLACIAN ON BOUNDED DOMAINS TSOGTGEREL GANTUMUR Abstract. After establishing discrete spectra for a large class of elliptic operators, we present some fundamental spectral properties
More informationLecture 5. Theorems of Alternatives and Self-Dual Embedding
IE 8534 1 Lecture 5. Theorems of Alternatives and Self-Dual Embedding IE 8534 2 A system of linear equations may not have a solution. It is well known that either Ax = c has a solution, or A T y = 0, c
More informationMathematical Methods in Quantum Mechanics With Applications to Schrödinger Operators 2nd edition
Errata G. Teschl, Mathematical Methods in Quantum Mechanics With Applications to Schrödinger Operators nd edition Graduate Studies in Mathematics, Vol. 157 American Mathematical Society, Providence, Rhode
More informationLecture 4 - Relativistic wave equations. Relativistic wave equations must satisfy several general postulates. These are;
Lecture 4 - Relativistic wave equations Postulates Relativistic wave equations must satisfy several general postulates. These are;. The equation is developed for a field amplitude function, ψ 2. The normal
More information