Baryon Physics in Holographic QCD Models (and Beyond) in collaboration with A. Wulzer
|
|
- August Hampton
- 6 years ago
- Views:
Transcription
1 Baryon Physics in Holographic QCD Models (and Beyond) Alex Pomarol (Univ. Autonoma Barcelona) in collaboration with A. Wulzer
2 One of the main goals of AdS/CFT: Find the string dual theory of QCD One of the closest example: Sakai-Sugimoto Model (D4/D8 system) Dual realization of Chiral symmetry breaking: z SU(N F ) L SU(N F ) R SU(N F ) V
3 At large N and large thooft coupling, g²n in the 4D gauge theory, the string dual theory is, at low-energies, a weakly-coupled gauge theory in 5D with chiral symmetry breaking on the z=0 boundary UV-bound. AdS 5 IR-bound. SU(2) L U(1) Y SU(NSO(5) F ) L SU(N U(1) F ) R SU(N F ) V SO(4) U(1) Fermions 5 of SO(5) z = z =0 warped extra dim: z Dirichlet: boundy conditions: A µ L Aµ R =0 Neumann: F µ5 L + F µ5 R =0
4 Proposed Holographic QCD model of two massless quarks Erlich,Katz,Son,Stephanov Da Rold,A.P.; Hirn,Sanz UV-bound. AdS 5 IR-bound. SU(2) L U(1) Y SU(N F SO(5) ) L SU(N U(1) F ) R U(2) L U(2) R SU(N F ) V U(2) V SO(4) U(1) z =0 Fermions 5 of SO(5) warped extra dim: z AdS space z = L 1 Dirichlet: boundy conditions: A µ L Aµ R =0 Neumann: F µ5 L + F µ5 R =0
5 5D Lagrangian: ds 2 = a(z) 2 [dx 2 + dz 2 ] a(z) M N c 64π 2 ] [Tr[L MN L MN ]+ α2 2 ˆL ˆLMN MN + {L R} ɛ MNOP Q LM Tr[L NO L PQ ] {L R} +... Chern-Simons term: Needed to reproduce the U(1)-anomaly in QCD Coefficient fixed no extra parameter!
6 5D lagrangian: a(z) M N c 64π 2 ] [Tr[L MN L MN ]+ α2 2 ˆL ˆLMN MN + {L R} ɛ MNOP Q LM Tr[L NO L PQ ] {L R} +... Theory of 3 parameters: M 5,L 1,α Compactification scale: Mass gap Model that successfully describes many properties of QCD mesons (Kaluza-Klein states)
7 Baryon sector?
8 Baryon sector? In the large- N c limit: M B N c = 1 1/N c Baryon are solitons! Witten Original motivation for Baryon as Skyrmions: solitons of the chiral lagrangian Skyrme 61, Adkins+Nappi+Witten 83
9 If only the F²-term is considered... Baryons: Solitons of the 5D theory instanton in 4D ( t E z ) Topological charge: Q = 1 16π 2 d 3 x L1 0 [ dz T r Lˆµˆν Lˆµˆν Rˆµˆν Rˆµˆν ] = N inst (L) N inst (R) ˆµ =1, 2, 3, 4(L 0 = R 0 = 0) Atiyah,Manton89 Son,Stephanov04 reduces to 4D Skyrmion charge Q = 1 24π 2 d 3 x ɛ ijk Tr [ U i U U j U U k U ] Z. U(x): pion field
10 Is the Baryon given by the 4D instanton configuraton? Yes, in an infinite flat space. Energy independent of size: E E =8π 2 M 5 ρ size
11 Is the Baryon given by the 4D instanton configuraton? Yes, in an infinite flat space. Energy independent of size: E E =8π 2 M 5 ρ size But curvature and compactification breaks the scale invariance of the instanton: E [ E =8π 2 M 5 1+ ρ ] 2R ρ size
12 Is the Baryon given by the 4D instanton configuraton? Yes, in an infinite flat space. Energy independent of size: E E =8π 2 M 5 ρ size But curvature and compactification breaks the scale invariance of the instanton: E [ E =8π 2 M 5 1+ ρ ] 2R ρ size It shrinks to zero size! Its stability is UV-sensitive: Depends on the higher-dimensional operators of the theory
13 Lowest higher-dimensional operator: Dimension five-operator: Chern-Simons term
14 Lowest higher-dimensional operator: Dimension five-operator: Chern-Simons term Stability and consistency of the model: 5D model: L 5 F Λ 5 AF F + 1 Λ 4 5 F Soliton energy E(ρ) ρm KK + 1 ρ 2 Λ 2 5 ρ 1 M 1/3 KK Λ2/3 5 >> 1 Λ 5 No sensitive to higher-dim operators Different from the 4D Skyrmion model: 4D Skyrmion: L χ (D µ U) m 2 ρ (D µ U) ρ 1 m ρ Sensitive to higher-dim operators
15 Mainly two approaches towards Holographic Baryons: a) Treat baryons as instanton configurations H.Hata,T.Sakai,S.Sugimoto,S.Yamato; D.K.Hong,T.Inami,H.U.Yee; D.K.Hong, M.Rho,H.U. Yee,P.YH.Hata,M.Murata,S.Yamato; K.Hashimoto,T.Sakai,S.Sugimoto b) Find the new 5D soliton configuration including the curvature of the space and the CS-term A.P., Wulzer; Wulzer, Panico
16 Mainly two approaches towards Holographic Baryons: a) Treat baryons as instanton configurations H.Hata,T.Sakai,S.Sugimoto,S.Yamato; D.K.Hong,T.Inami,H.U.Yee; D.K.Hong, M.Rho,H.U. Yee,P.YH.Hata,M.Murata,S.Yamato; K.Hashimoto,T.Sakai,S.Sugimoto b) Find the new 5D soliton configuration including the curvature of the space and the CS-term A.P., Wulzer; Wulzer, Panico Several problems: Not fully consistent (CS-term is sizable) Does not reproduce large-n expectations Wulzer,Panico; A.Cherman,T.D. Cohen,M.Nielsen
17 Solution of the SU(2) part: Ansatz (Witten 77): cylindrical symmetry invariance under the combine SU(2) gauge and rotation + Parity: L a j = 1+φL 2 (r, z) r 2 ɛ jak x k + φl 1 (r, z) ( r 2 ) A L r 3 δ ja x j x a + 1 (r, z) r 2 x j x a L a 5 = AL 2 (r, z) x a r R a j (x, z) = L a j ( x, z) R a 5(x, z) =L a 5( x, z)
18 Solution of the SU(2) part: Ansatz (Witten 77): cylindrical symmetry invariance under the combine SU(2) gauge and rotation + Parity: L a j = 1+φL 2 (r, z) r 2 ɛ jak x k + φl 1 (r, z) ( r 2 ) A L r 3 δ ja x j x a + 1 (r, z) r 2 x j x a L a 5 = AL 2 (r, z) x a r R a j (x, z) = L a j ( x, z) R a 5(x, z) =L a 5( x, z) E = 16π 0 dr zir z uv dz M 5 a(z) 4 fields: combine in a 2D gauge boson + a complex scalar 2D Abelian Higgs models: [ 1 2 D µφ r2 F 2 µ ν + 1 ( ) ] 1 φ 2 2 4r 2.
19 Solution of the U(1) part: Ansatz: ˆL 0 = ˆR 0 = 1 α s(r, z) r
20 Solution of the U(1) part: Ansatz: ˆL 0 = ˆR 0 = 1 α E =8πM 5 0 dr s(r, z) r L1 0 dz scalar coupled to the topological charge density of the 2D Abelian model [ a(z) 1 2 ( µs) 2 πγ s ] r ρ topo 1/r 2 Creates a potential that prevents the shrinking of the soliton
21 2D Abelian Higgs model + Scalar Total: 5 fields System of 5 non-linear PDEs in 2D + suitable b.c. to ensure Q=1 Solution must be found numerically We rely on FEMLAB (COMSOL) package used by engineers in many physical systems
22 Skyrmion energy density E = drdz ρ E = f(m 5,L 1,α) 1140 MeV z r taking F π,m ρ,f ω /F ρ to fix the 3 parameters a instanton-like skyrmion, without the CS, will have 1/2 of the energy
23 Identification of the the proton and neutron: Standard Procedure: Adkins+Nappi+Witten 83 1) Identify the time-dependent fluctuations of the rotational zero-modes: SU(2)-rotation of the soliton doesn t change its energy U = a 0 + i σ a i SU(2) a 0,a i : collective coordinates (quantum mechanical variables) 2) Calculate H 3) Calculate the spin and isospin operator 4) Eigenstates of spin and isospin 1/2 [Pl') = 1 (al + ia2), [p$) = - / ( a ia3), In?) = / (ao + ia3), In,l,) = - % ( a l -- ia2),,/7- qt / _
24 Extra difficulty: After turning on a 0,i (t) we must assure that the EOM are satisfied: Fields that were zero in our Ansatz turn on
25 Static properties of the baryon Baryon couplings to external sources: B J µ B = J boundary µ soliton J boundary µ = δl 5D δa non norma µ = F 5µ boundary Axial coupling, magnetic and electric form factors (and moments) can be calculated Tree-level: G S E = N c dr r j 0 (qr)(a(z) z s) 6πγL UV G V E = 4πM [ )] 5 dr r 2 j 0 (qr) a(z) ( z v 2(D z χ) 3λ (2) UV G S M = 8πM NM 5 α dr r 3 j 1(qr) (a(z) z Q) 3λ qr UV G V M = M N N c dr r 2 j ) 1(qr) (a(z)(d z φ) 3πLγα qr (2) UV G A = M [ N N c dr r a(z) j ) 1(qr) ((D z φ) E 3παγL qr (1) ra zr ] a(z)(d z φ) (1) j 0 (qr) ( UV
26 Results: A.P.,Wulzer; Wulzer,Panico Experiment AdS 5 Deviation M N 940 MeV 1130 MeV 20% µ S % µ V % g A % re,s fm 0.88 fm 11% re,v fm rm,s fm 0.92 fm 12% rm,v fm r 2 A 0.68 fm 0.76 fm 12% µ p /µ n %
27 Results: A.P.,Wulzer; Wulzer,Panico Experiment AdS 5 Deviation M N 940 MeV 1130 MeV 20% µ S % µ V % g A % re,s fm 0.88 fm 11% re,v fm rm,s fm 0.92 fm 12% rm,v fm r 2 A 0.68 fm 0.76 fm 12% µ p /µ n % Large deviations: Possible due to have a massless pion Due to have a massless pion Very small deviation: Prediction including subleading large-n corrections µ p /µ n = (µ V + µ S )/(µ V µ S ) 1 2µ S /µ V.
28 q 2 GeV 2 Form factors: Dashed line: Empirical dipole fit Figure 1: Scalar (left) and vector (right) electric the empirical dipole fit (dashed Wulzer,Panico line) [7] G E S q G M S q V q 2 GeV 2 q 2 GeV 2 1 G M P q 2 GM N q q 2 GeV Figure 2: Normalized scalar (left) and vector (rig 1.0 results with the empirical dipole fit (dashed line does not invalidate the general picture. G A q 2 G A It is interesting to notice that a much bette 0.4 instead of the standard procedure [6] considered 0.2 quantization of collective coordinates of the skyr The results of Ref. [17] can be directly applied q 2 GeV 2 collective coordinate quantization, the 5D natur
29 Goldberger-Treiman relation In large N: A µ π N N g A = F πg πnn M N Also fulfilled in this model
30 Baryons in Warped 5D models for Electroweak Symmetry breaking a) Higgsless: 5D version of Technicolor F π 246 GeV M KK 1.2 T ev b) Higgs as Pseudo-Goldstone boson (PGB) ~ pion F π 500 GeV M KK 2.4 T ev If stabilized by a CS-term as in 5D QCD case, Baryon mass: M B 6 T ev ( F 246 GeV ) 2 ( 1 T ev M KK ) Out of the reach at the LHC! Higgsless Higgs as PGB 5 TeV 10 TeV
31 But we have more freedom in EWSB models: Baryon ~ Instanton configuration stabilized by a small effect coming from a higher-dim operator Mass: M B 8π 2 M 5 (model-independent) They could be lighter (2-3 TeV) and smaller (ρ~1/tev)
32 Cosmological Implications: Stable states (they carry topological charges) Potentially Dark Matter candidates Small energy densities if thermally produced: (They must be neutral under the SM group) For σ ρ 2 Ωh ( 1 T ev 1 ρ ) 2 << 0.1
33 Alternatives ways to produce them: As real baryons, we can use Baryogenesis mechanism in particular electroweak baryogenesis Production of 5D baryon at the confiniment/deconfinement phase transition Possible to study in extra dimensional models: Hawking-Page transition Heating the extra dim, metric changes to that of an AdS Black-hole (First order phase transition) Barr,Chivukula,Farhi 90 Possibility to produce these new baryon at the same time that real baryons Ω DM related with Ω B
34 Direct detection: Even if neutral under SM gauge group, its large magnetic moments allow to detect them... work in progress
35 Conclusions Baryons of a 5D QCD-like model arise as solitonic configurations We have showed that they are stable and consistently described within the 5D model We have found the exact solution (numerically) and calculated their properties (masses, couplings,...) behave like real baryons Interesting cosmological implications for models of EWSB: worthy to fully explore More to do: incorporate quark masses, study phase transitions at high baryon number,...
36
37 Anomalous couplings Meson physics from the CS term: π π N c 64π 2 ɛmnop Q γ γ γ ω d 5 x L M Tr[L NO L PQ ] {L R} N c 1 πf 48π 2 µν (γ) F π F (γ) ρσ F (γ) ρσ N c g ρππ πf 16π 2 µν (ω) F π an predict plenty of an ω :1 (I = 0) π ρ ω N c gρππ 2 x πf 16π 2 µν (ω) F π F (ρ) ρσ x 1.16 ρ :1 (I = 1)
38 Relevant for meson partial decay widths γ ω, ρ Γ(ω, ρ πγ) π ω ρ π π π Γ(ω 3π) ω ρ γ π µ(e) Γ(ω πµµ(ee)) µ(e) also anomalous form factors Grigoryan,Radyushkin
39 Experiment AdS 5 Γ(ω πγ) Γ(ω 3π) Γ(ρ πγ) Γ(ω πµµ) Γ(ω πee) Average error of ~ 10%
Nucleons from 5D Skyrmions
Nucleons from 5D Skyrmions Giuliano Panico Physikalisches Institut der Universität Bonn Planck 2009 26 May 2009 Based on G. P. and A. Wulzer 0811.2211 [hep-ph] and A. Pomarol and A. Wulzer 0807.0316 [hep-ph]
More informationMeson-Nucleon Coupling. Nobuhito Maru
Meson-Nucleon Coupling from AdS/QCD Nobuhito Maru (Chuo Univ.) with Motoi Tachibana (Saga Univ.) arxiv:94.3816 (Accepted in in EPJC) 7/9/9 workshop@yitp Plan 1: Introduction : Meson sector (review) 3:
More informationSkyrmions in Composite Higgs Models
Skyrmions in Composite Higgs Models Marc Gillioz Particle Physics & Cosmology December 4, 2012 based on arxiv:1012.5288, 1103.5990, 1111.2047 in collaboration with A. von Manteuffel, P. Schwaller and D.
More informationHUGS Dualities and QCD. Josh Erlich LECTURE 5
HUGS 2012 Dualities and QCD Josh Erlich LECTURE 5 Outline The meaning of duality in physics (Example: The Ising model) Quark-Hadron duality (experimental and theoretical evidence) Electric-Magnetic Duality
More informationDepartament de Física Grup de Física Teòrica
Universitat Autònoma de Barcelona Departament de Física Grup de Física Teòrica Symmetry breaking in particle physics from extra dimensions. Ruptura de simetrías en física de partículas mediante dimensiones
More informationExotic Dark Matter as Spin-off of Proton Stability. Kaustubh Agashe (University of Maryland)
Exotic Dark Matter as Spin-off of Proton Stability Kaustubh Agashe (University of Maryland) Outline and Summary Warped extra dimensions address Planckweak and flavor hierarchies: new (KK) particles at
More informationELECTROWEAK BREAKING IN EXTRA DIMENSIONS MINI REVIEW. Gero von Gersdorff (École Polytechnique) Moriond Electroweak Session, La Thuile, March 2011
ELECTROWEAK BREAKING IN EXTRA DIMENSIONS MINI REVIEW Gero von Gersdorff (École Polytechnique) Moriond Electroweak Session, La Thuile, March 2011 OUTLINE How can Extra Dimensions explain the electroweak
More informationAxions. Kerstin Helfrich. Seminar on Theoretical Particle Physics, / 31
1 / 31 Axions Kerstin Helfrich Seminar on Theoretical Particle Physics, 06.07.06 2 / 31 Structure 1 Introduction 2 Repetition: Instantons Formulae The θ-vacuum 3 The U(1) and the strong CP problem The
More informationComposite Higgs Overview
Composite Higgs Overview Tony Gherghetta Fundamental Composite Dynamics, IBS CTPU, Daejeon, Korea, December 6, 2017 1 IBS Daejeon - 6 December 2017 Composite Higgs New strong force with coupling, g s g
More informationLectures on. Holographic QCD. Shigeki Sugimoto (Kavli IPMU) 1/53. holography 2013 APCTP, Pohang 2013/6/19 and 20
Lectures on Holographic QCD Shigeki Sugimoto (Kavli IPMU) Lecture @ holography 2013 APCTP, Pohang 2013/6/19 and 20 1/53 1 Introduction Claim : Hadrons can be described by string theory without using quarks
More informationThe Phases of QCD. Thomas Schaefer. North Carolina State University
The Phases of QCD Thomas Schaefer North Carolina State University 1 Motivation Different phases of QCD occur in the universe Neutron Stars, Big Bang Exploring the phase diagram is important to understanding
More informationTheories with Compact Extra Dimensions
Instituto de Física USP PASI 2012 UBA Theories with Compact Extra dimensions Part II Generating Large Hierarchies with ED Theories Warped Extra Dimensions Warped Extra Dimensions One compact extra dimension.
More informationH-dibaryon in Holographic QCD. Kohei Matsumoto (M2, YITP) (in collaboration with Hideo Suganuma, Yuya Nakagawa)
H-dibaryon in Holographic QCD Kohei Matsumoto (M2, YITP) (in collaboration with Hideo Suganuma, Yuya Nakagawa) 1. Aug. 2016 1 Contents 1. Introduction 2. Chiral Soliton Model 3. Holographic QCD 4. Results
More information2T-physics and the Standard Model of Particles and Forces Itzhak Bars (USC)
2T-physics and the Standard Model of Particles and Forces Itzhak Bars (USC) hep-th/0606045 Success of 2T-physics for particles on worldlines. Field theory version of 2T-physics. Standard Model in 4+2 dimensions.
More informationHolographic QCD. M. Stephanov. U. of Illinois at Chicago. Holographic QCD p. 1/2
Holographic QCD p. 1/2 Holographic QCD M. Stephanov U. of Illinois at Chicago Holographic QCD p. 2/2 Motivation and plan Large N c : planar diagrams dominate resonances are infinitely narrow Effective
More informationMay 7, Physics Beyond the Standard Model. Francesco Fucito. Introduction. Standard. Model- Boson Sector. Standard. Model- Fermion Sector
- Boson - May 7, 2017 - Boson - The standard model of particle physics is the state of the art in quantum field theory All the knowledge we have developed so far in this field enters in its definition:
More informationInstantons and Sphalerons in a Magnetic Field
Stony Brook University 06/27/2012 GB, G.Dunne & D. Kharzeev, arxiv:1112.0532, PRD 85 045026 GB, D. Kharzeev, arxiv:1202.2161, PRD 85 086012 Outline Motivation & some lattice results General facts on Dirac
More informationThe Gauge/Gravity correspondence: linking General Relativity and Quantum Field theory
The Gauge/Gravity correspondence: linking General Relativity and Quantum Field theory Alfonso V. Ramallo Univ. Santiago IFIC, Valencia, April 11, 2014 Main result: a duality relating QFT and gravity Quantum
More informationMesons as Open Strings
Mesons as Open Strings in Holographic QCD Shigeki Sugimoto (IPMU, Univ of Tokyo) based on: arxiv:1005.0655 with T. Imoto and T. Sakai Seminar @ Cambridge 2/17/2011 1 22 1 Introduction (N f = 2, Isovector)
More informationQCD and a Holographic Model of Hadrons
QCD and a Holographic Model of Hadrons M. Stephanov U. of Illinois at Chicago AdS/QCD p.1/18 Motivation and plan Large N c : planar diagrams dominate resonances are infinitely narrow Effective theory in
More informationWess-Zumino-Witten term in QCD-like theories
Wess-Zumino-Witten term in QCD-like theories Helena Kolešová University of Stavanger Joint work with Tomáš Brauner Helena Kolešová: Wess-Zumino-Witten term in QCD-like theories 1 Outline Motivation: QCD-like
More informationElementary/Composite Mixing in Randall-Sundrum Models
Elementary/Composite Mixing in Randall-Sundrum Models Brian Batell University of Minnesota with Tony Gherghetta - arxiv:0706.0890 - arxiv:0710.1838 Cornell 1/30/08 5D Warped Dimension = 4D Strong Dynamics
More informationQCD in the light quark (up & down) sector (QCD-light) has two mass scales M(GeV)
QCD in the light quark (up & down) sector (QCD-light) has two mass scales M(GeV) 1 m N m ρ Λ QCD 0 m π m u,d In a generic physical system, there are often many scales involved. However, for a specific
More informationParticles and Strings Probing the Structure of Matter and Space-Time
Particles and Strings Probing the Structure of Matter and Space-Time University Hamburg DPG-Jahrestagung, Berlin, March 2005 2 Physics in the 20 th century Quantum Theory (QT) Planck, Bohr, Heisenberg,...
More informationHolographic Monopole Catalysis of Baryon Decay
Holographic Monopole Catalysis of Baryon Decay KIAS String Workshop, Sept. 22-26, 2008 Deog Ki Hong (Pusan Nat l U. ) Based on arxiv:0804.1326, done with K. Lee, C. Park, and H.U. Yee I. Introduction Gauge/String
More informationThe Standard Model and Beyond
The Standard Model and Beyond Nobuchika Okada Department of Physics and Astronomy The University of Alabama 2011 BCVSPIN ADVANCED STUDY INSTITUTE IN PARTICLE PHYSICS AND COSMOLOGY Huê, Vietnam, 25-30,
More informationStrongly Coupled Dark Matter at the LHC
Strongly Coupled Dark Matter at the LHC Graham Kribs University of Oregon Appelquist et al (LSD Collaboration): 1402.6656; 1503.04203; 1503.04205 GK, Adam Martin, Ethan Neil, Bryan Ostdiek, Tom Tong [in
More informationLecture 03. The Standard Model of Particle Physics. Part II The Higgs Boson Properties of the SM
Lecture 03 The Standard Model of Particle Physics Part II The Higgs Boson Properties of the SM The Standard Model So far we talked about all the particles except the Higgs If we know what the particles
More informationS-CONFINING DUALITIES
DIMENSIONAL REDUCTION of S-CONFINING DUALITIES Cornell University work in progress, in collaboration with C. Csaki, Y. Shirman, F. Tanedo and J. Terning. 1 46 3D Yang-Mills A. M. Polyakov, Quark Confinement
More informationHow to tell apart non-standard EWSB mechanisms. Veronica Sanz CERN and YORK Moriond 2012
How to tell apart non-standard EWSB mechanisms Veronica Sanz CERN and YORK Moriond 2012 In this talk What is standard? EWSB by elementary scalar(s) includes SM and SUSY What is non-standard? EWSB by -composite
More informationWhere are we heading? Nathan Seiberg IAS 2016
Where are we heading? Nathan Seiberg IAS 2016 Two half-talks A brief, broad brush status report of particle physics and what the future could be like The role of symmetries in physics and how it is changing
More informationThe mass of the Higgs boson
The mass of the Higgs boson LHC : Higgs particle observation CMS 2011/12 ATLAS 2011/12 a prediction Higgs boson found standard model Higgs boson T.Plehn, M.Rauch Spontaneous symmetry breaking confirmed
More informationA first trip to the world of particle physics
A first trip to the world of particle physics Itinerary Massimo Passera Padova - 13/03/2013 1 Massimo Passera Padova - 13/03/2013 2 The 4 fundamental interactions! Electromagnetic! Weak! Strong! Gravitational
More information125 GeV Higgs Boson and Gauge Higgs Unification
125 GeV Higgs Boson and Gauge Higgs Unification Nobuchika Okada The University of Alabama Miami 2013, Fort Lauderdale, Dec. 12 18, 2013 Discovery of Higgs boson at LHC! 7/04/2012 Standard Model Higgs boson
More informationBaby Skyrmions in AdS 3 and Extensions to (3 + 1) Dimensions
Baby Skyrmions in AdS 3 and Extensions to (3 + 1) Dimensions Durham University Work in collaboration with Matthew Elliot-Ripley June 26, 2015 Introduction to baby Skyrmions in flat space and AdS 3 Discuss
More informationin the Standard Model
Pseudo-Chern-Simons Terms in the Standard Model (with Applications) Rutgers, Dec. 5, 2007 Based on Baryon-Number-Induced Chern-Simons Couplings of Vector and Axial-Vector Mesons in Holographic QCD, PRL
More informationQuantum Fields in Curved Spacetime
Quantum Fields in Curved Spacetime Lecture 3 Finn Larsen Michigan Center for Theoretical Physics Yerevan, August 22, 2016. Recap AdS 3 is an instructive application of quantum fields in curved space. The
More informationHolographic study of magnetically induced ρ meson condensation
Holographic study of magnetically induced ρ meson condensation Nele Callebaut Ghent University November 13, 2012 QCD in strong magnetic fields, Trento Overview 1 Introduction 2 Holographic set-up The Sakai-Sugimoto
More informationBEYOND THE SM (II) Kaustubh Agashe (University of Maryland)
BEYOND THE SM (II) Kaustubh Agashe (University of Maryland) ierarchy problems (from lecture 1) Planck-weak hierarchy problem Flavor (hierarchy) puzzle...extra dimensions can address both... Extra dimensions:
More informationThe cosmological constant puzzle
The cosmological constant puzzle Steven Bass Cosmological constant puzzle: Accelerating Universe: believed to be driven by energy of nothing (vacuum) Vacuum energy density (cosmological constant or dark
More informationGauge-Higgs Unification and the LHC
Gauge-Higgs Unification and the LHC If the Higgs boson is 124 or 126 or? GeV with SM couplings, Explain SM Higgs. with non-sm couplings, is not seen at LHC, Higgs is stable. Higgs does not exist. 2 If
More informationMeson Condensation and Holographic QCD
Meson Condensation and Holographic QCD Kyle Zora April 13, 2012 Abstract Quantum Chromodynamics (QCD), which describes the strong nuclear force, is difficult to solve both analytically and numerically.
More informationPartial Compositeness and
Partial Compositeness and its implications for the LHC Roberto Contino Università Roma La Sapienza & INFN In collaboration with: Raman Sundrum Thomas Kramer Minho Son Motivation: Solving the Hierarchy
More informationInternational Journal of Theoretical Physics, October 2015, Volume 54, Issue 10, pp ABSTRACT
1 meson-nucleon coupling constant from the soft-wall AdS/QCD model Narmin Huseynova a,b1 and Shahin Mamedov a a Institute for Physical Problems, Baku State University, Z.Khalilov 3, Baku, AZ-1148, Azerbaijan
More informationSupersymmetry Breaking
Supersymmetry Breaking LHC Search of SUSY: Part II Kai Wang Phenomenology Institute Department of Physics University of Wisconsin Madison Collider Phemonology Gauge Hierarchy and Low Energy SUSY Gauge
More informationOne Loop Tests of Higher Spin AdS/CFT
One Loop Tests of Higher Spin AdS/CFT Simone Giombi UNC-Chapel Hill, Jan. 30 2014 Based on 1308.2337 with I. Klebanov and 1401.0825 with I. Klebanov and B. Safdi Massless higher spins Consistent interactions
More informationBoundary Conditions in AdS Life Without a Higgs
Boundary Conditions in AdS Life Without a Higgs Csáki, Grojean, Murayama, Pilo, JT hep-ph/0305237 Csáki, Grojean, Pilo, JT hep-ph/0308038 Csáki, Grojean, Hubisz, Shirman, JT hep-ph/0310355 Cacciapaglia,
More informationBSM physics and Dark Matter
BSM physics and Dark Matter Andrea Mammarella University of Debrecen 26-11-2013 1 Introduction and motivation 2 Dark Matter 3 MiAUMSSM 4 Dark Matter in the MiAUMSSM 5 Conclusion Introduction and motivation
More informationA model of the basic interactions between elementary particles is defined by the following three ingredients:
I. THE STANDARD MODEL A model of the basic interactions between elementary particles is defined by the following three ingredients:. The symmetries of the Lagrangian; 2. The representations of fermions
More informationGauge/Gravity Duality: Applications to Condensed Matter Physics. Johanna Erdmenger. Julius-Maximilians-Universität Würzburg
Gauge/Gravity Duality: Applications to Condensed Matter Physics. Johanna Erdmenger Julius-Maximilians-Universität Würzburg 1 New Gauge/Gravity Duality group at Würzburg University Permanent members 2 Gauge/Gravity
More informationSTANDARD MODEL and BEYOND: SUCCESSES and FAILURES of QFT. (Two lectures)
STANDARD MODEL and BEYOND: SUCCESSES and FAILURES of QFT (Two lectures) Lecture 1: Mass scales in particle physics - naturalness in QFT Lecture 2: Renormalisable or non-renormalisable effective electroweak
More informationGauge-Higgs Unification on Flat Space Revised
Outline Gauge-Higgs Unification on Flat Space Revised Giuliano Panico ISAS-SISSA Trieste, Italy The 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions Irvine,
More informationEDMs from the QCD θ term
ACFI EDM School November 2016 EDMs from the QCD θ term Vincenzo Cirigliano Los Alamos National Laboratory 1 Lecture II outline The QCD θ term Toolbox: chiral symmetries and their breaking Estimate of the
More informationDARK MATTER CANDIDATES IN COMPOSITE HIGGS MODELS
DARK MATTER CANDIDATES IN COMPOSITE HIGGS MODELS Daniel Murnane University of Adelaide, University of Southern Denmark Supervisors: Anthony G. Williams, Martin White, Francesco Sannino A NATURAL DM PARTICLE
More informationEffective Theory for Electroweak Doublet Dark Matter
Effective Theory for Electroweak Doublet Dark Matter University of Ioannina, Greece 3/9/2016 In collaboration with Athanasios Dedes and Vassilis Spanos ArXiv:1607.05040 [submitted to PhysRevD] Why dark
More informationMonopoles and Skyrmions. Ya. Shnir. Quarks-2010
Monopoles and Skyrmions Ya. Shnir Quarks-2010 Коломна, Россия, 8 Июня 2010 Outline Abelian and non-abelian magnetic monopoles BPS monopoles Rational maps and construction of multimonopoles SU(2) axially
More informationEXOTICA AT LHC. Philippe Miné LPNHE-Ecole Polytechnique, IN2P3-CNRS, France CMS collaboration.
EXOTICA AT LHC Philippe Miné LPNHE-Ecole Polytechnique, IN2P3-CNRS, France CMS collaboration pmine@poly.in2p3.fr Chia, Sardinia, Italy October 24-27 2001 1 EXOTICA AT LHC Beyond the Standard Model, Supersymmetry
More informationLarge Extra Dimensions and the Hierarchy Problem
Large Extra Dimensions and the Hierarchy Problem The Hierarchy Problem - At Planck energies (M P L 10 19 GeV ) all four forces have the same strength. -At the Electroweak scale (M EW 1T ev ) the four forces
More informationLinear Confinement from AdS/QCD. Andreas Karch, University of Washington work with Ami Katz, Dam Son, and Misha Stephanov.
Linear Confinement from AdS/QCD Andreas Karch, University of Washington work with Ami Katz, Dam Son, and Misha Stephanov. Excited Rho Mesons 6 (from PARTICLE DATA BOOK) Experiment 0.933 n 5 m 2 n, GeV
More informationBeyond the Standard Model
Beyond the Standard Model The Standard Model Problems with the Standard Model New Physics Supersymmetry Extended Electroweak Symmetry Grand Unification References: 2008 TASI lectures: arxiv:0901.0241 [hep-ph]
More informationAccidental SUSY at the LHC
Accidental SUSY at the LHC Tony Gherghetta (University of Melbourne) PACIFIC 2011, Moorea, French Polynesia, September 12, 2011 with Benedict von Harling and Nick Setzer [arxiv:1104.3171] 1 What is the
More informationUV Completions of Composite Higgs Models with Partial Compositeness
UV Completions of Composite Higgs Models with Partial Compositeness Marco Serone, SISSA, Trieste Based on 1211.7290, in collaboration with Francesco Caracciolo and Alberto Parolini and work in progress
More informationHow I learned to stop worrying and love the tachyon
love the tachyon Max Planck Institute for Gravitational Physics Potsdam 6-October-2008 Historical background Open string field theory Closed string field theory Experimental Hadron physics Mesons mass
More informationg abφ b = g ab However, this is not true for a local, or space-time dependant, transformations + g ab
Yang-Mills theory Modern particle theories, such as the Standard model, are quantum Yang- Mills theories. In a quantum field theory, space-time fields with relativistic field equations are quantized and,
More informationBeyond the Standard Model
4 KIT, 6-10 February 12 Beyond the Standard Model Guido Altarelli Universita di Roma Tre CERN Solutions to the hierarchy problem Supersymmetry: boson-fermion symm. The most ambitious and widely accepted
More informationT -Parity in Little Higgs Models a
T -Parity in Little Higgs Models a David Krohn a Based on arxiv:0803.4202 [hep-ph] with Itay Yavin, and work in progress with I.Y., Lian-Tao Wang, and Hsin-Chia Cheng Outline Review of little Higgs models
More informationComposite gluino at the LHC
Composite gluino at the LHC Thomas Grégoire University of Edinburgh work in progress with Ami Katz What will we see at the LHC? Natural theory of EWSB? Supersymmetry? Higgs as PGSB (LH, RS-like)? Extra-
More informationFlavor, Minimality and Naturalness in Composite Higgs Models
eth zurich Flavor, Minimality and Naturalness in Composite Higgs Models Adrián Carmona Bermúdez Institute for Theoretical Physics, ETH Zurich In collaboration with F. Goertz A naturally light Higgs without
More informationComments on finite temperature/density in holographic QCD
Comments on finite temperature/density in holographic QCD (Review + Unpublished analyses + Speculation) Shigeki Sugimoto (YITP) YKIS2018b Symposium Recent Developments in Quark-Hadron Sciences, 6/13/2018
More informationWarped Models in String Theory
Warped Models in String Theory SISSA/ISAS Trieste (Italy) Rutgers 14 November 2006 (Work in collaboration with B.S.Acharya and F.Benini) Appearing soon Introduction 5D Models 5D warped models in a slice
More informationSM, EWSB & Higgs. MITP Summer School 2017 Joint Challenges for Cosmology and Colliders. Homework & Exercises
SM, EWSB & Higgs MITP Summer School 017 Joint Challenges for Cosmology and Colliders Homework & Exercises Ch!"ophe Grojean Ch!"ophe Grojean DESY (Hamburg) Humboldt University (Berlin) ( christophe.grojean@desy.de
More informationHolographic study of magnetically induced QCD effects:
Holographic study of magnetically induced QCD effects: split between deconfinement and chiral transition, and evidence for rho meson condensation. Nele Callebaut, David Dudal, Henri Verschelde Ghent University
More informationAnomaly. Kenichi KONISHI University of Pisa. College de France, 14 February 2006
Anomaly Kenichi KONISHI University of Pisa College de France, 14 February 2006 Abstract Symmetry and quantization U A (1) anomaly and π 0 decay Origin of anomalies Chiral and nonabelian anomaly Anomally
More informationString/gauge theory duality and QCD
String/gauge theory duality and QCD M. Kruczenski Purdue University ASU 009 Summary Introduction String theory Gauge/string theory duality. AdS/CFT correspondence. Mesons in AdS/CFT Chiral symmetry breaking
More informationSupersymmetric Gauge Theories in 3d
Supersymmetric Gauge Theories in 3d Nathan Seiberg IAS Intriligator and NS, arxiv:1305.1633 Aharony, Razamat, NS, and Willett, arxiv:1305.3924 3d SUSY Gauge Theories New lessons about dynamics of quantum
More informationPhenomenological Aspects of LARGE Volume Models
Phenomenological Aspects of LARGE Volume Models Joseph P. Conlon (Cavendish Laboratory & DAMTP, Cambridge) 15th Irish Quantum Field Theory Meeting May(nooth) 2008 Phenomenological Aspects of LARGE Volume
More informationAcknowledgements An introduction to unitary symmetry The search for higher symmetries p. 1 The eight-baryon puzzle p. 1 The elimination of
Preface p. xiii Acknowledgements p. xiv An introduction to unitary symmetry The search for higher symmetries p. 1 The eight-baryon puzzle p. 1 The elimination of G[subscript 0] p. 4 SU(3) and its representations
More informationCP Violation, Baryon violation, RPV in SUSY, Mesino Oscillations, and Baryogenesis
CP Violation, Baryon violation, RPV in SUSY, Mesino Oscillations, and Baryogenesis David McKeen and AEN, arxiv:1512.05359 Akshay Ghalsasi, David McKeen, AEN., arxiv:1508.05392 (Thursday: Kyle Aitken, David
More informationComposite Higgs, Quarks and Leptons, a contemporary view
Composite Higgs, Quarks and Leptons, a contemporary view 1 Thanks to Sid Drell Always be positive, curious, constructive Α others will think your questions are dumb 2 3 Brodsky-Drell anomalous magnetic
More informationElectric Dipole Moments and the strong CP problem
Electric Dipole Moments and the strong CP problem We finally understand CP viola3on.. QCD theta term Jordy de Vries, Nikhef, Amsterdam Topical Lectures on electric dipole moments, Dec. 14-16 Introductory
More informationQuark Mass from Tachyon
Quark Mass from Tachyon Shigenori Seki This talk is based on O. Bergman, S.S., J. Sonnenschein, JHEP 071 (007) 07; S.S., JHEP 1007 (010) 091. 1 September 010 Crete Conference on Gauge Theories and the
More informationNeutrinos and Fundamental Symmetries: L, CP, and CP T
Neutrinos and Fundamental Symmetries: L, CP, and CP T Outstanding issues Lepton number (L) CP violation CP T violation Outstanding issues in neutrino intrinsic properties Scale of underlying physics? (string,
More informationIntroduction to AdS/CFT
Introduction to AdS/CFT D-branes Type IIA string theory: Dp-branes p even (0,2,4,6,8) Type IIB string theory: Dp-branes p odd (1,3,5,7,9) 10D Type IIB two parallel D3-branes low-energy effective description:
More informationVacuum Energy and the cosmological constant puzzle
Vacuum Energy and the cosmological constant puzzle Cosmological constant puzzle: Steven Bass Accelerating Universe: believed to be driven by energy of nothing (vacuum) Positive vacuum energy = negative
More informationtowards a holographic approach to the QCD phase diagram
towards a holographic approach to the QCD phase diagram Pietro Colangelo INFN - Sezione di Bari - Italy in collaboration with F. De Fazio, F. Giannuzzi, F. Jugeau and S. Nicotri Continuous Advances in
More informationLectures on Chiral Perturbation Theory
Lectures on Chiral Perturbation Theory I. Foundations II. Lattice Applications III. Baryons IV. Convergence Brian Tiburzi RIKEN BNL Research Center Chiral Perturbation Theory I. Foundations Low-energy
More informationNon-SUSY BSM: Lecture 1/2
Non-SUSY BSM: Lecture 1/2 Generalities Benasque September 26, 2013 Mariano Quirós ICREA/IFAE Mariano Quirós (ICREA/IFAE) Non-SUSY BSM: Lecture 1/2 1 / 31 Introduction Introduction There are a number of
More informationGlueballs and their decay in holographic QCD
Glueballs and their decay in holographic QCD Anton Rebhan Institute for Theoretical Physics TU Wien, Vienna, Austria March 2, 2015 A. Rebhan Holographic Glueball Decay March 2, 2015 1 / 17 Still elusive:
More informationSpeculations on extensions of symmetry and interctions to GUT energies Lecture 16
Speculations on extensions of symmetry and interctions to GUT energies Lecture 16 1 Introduction The use of symmetry, as has previously shown, provides insight to extensions of present physics into physics
More information8.821 F2008 Lecture 05
8.821 F2008 Lecture 05 Lecturer: McGreevy Scribe: Evangelos Sfakianakis September 22, 2008 Today 1. Finish hindsight derivation 2. What holds up the throat? 3. Initial checks (counting of states) 4. next
More informationSolutions to gauge hierarchy problem. SS 10, Uli Haisch
Solutions to gauge hierarchy problem SS 10, Uli Haisch 1 Quantum instability of Higgs mass So far we considered only at RGE of Higgs quartic coupling (dimensionless parameter). Higgs mass has a totally
More informationAnomalous neutrinophoton. the Standard Model. June 5, 2008
Anomalous neutrinophoton interactions in the Standard Model June 5, 2008 Based on Baryon-Number-Induced Chern-Simons Couplings of Vector and Axial-Vector Mesons in Holographic QCD, PRL 99,14 (2007); arxiv:0704.1604
More informationLife with More Than 4: Extra Dimensions
Life with More Than 4: Extra Dimensions Andrew Larkoski 4/15/09 Andrew Larkoski SASS 5 Outline A Simple Example: The 2D Infinite Square Well Describing Arbitrary Dimensional Spacetime Motivations for Extra
More informationIntroduction to Instantons. T. Daniel Brennan. Quantum Mechanics. Quantum Field Theory. Effects of Instanton- Matter Interactions.
February 18, 2015 1 2 3 Instantons in Path Integral Formulation of mechanics is based around the propagator: x f e iht / x i In path integral formulation of quantum mechanics we relate the propagator to
More informationAbelian and non-abelian Hopfions in all odd dimensions
Abelian and non-abelian Hopfions in all odd dimensions Tigran Tchrakian Dublin Institute for Advanced Studies (DIAS) National University of Ireland Maynooth, Ireland 7 December, 2012 Table of contents
More informationHunting New Physics in the Higgs Sector
HS Hunting New Physics in the Higgs Sector SM Higgs Sector - Test of the Higgs Mechanism Oleg Kaikov KIT, Seminar WS 2015/16 Prof. Dr. M. Margarete Mühlleitner, Dr. Roger Wolf, Dr. Hendrik Mantler Advisor:
More informationNovember 24, Scalar Dark Matter from Grand Unified Theories. T. Daniel Brennan. Standard Model. Dark Matter. GUTs. Babu- Mohapatra Model
Scalar from November 24, 2014 1 2 3 4 5 What is the? Gauge theory that explains strong weak, and electromagnetic forces SU(3) C SU(2) W U(1) Y Each generation (3) has 2 quark flavors (each comes in one
More informationIntroduction to (Large) Extra Dimensions
SLAC Dark Matter & Exotic Physics WG p. 1/39 Introduction to (Large) Extra Dimensions A. Lionetto Department of Physics & INFN Roma Tor Vergata SLAC Dark Matter & Exotic Physics WG p. 2/39 Outline Introduction
More informationLittle Higgs Models Theory & Phenomenology
Little Higgs Models Theory Phenomenology Wolfgang Kilian (Karlsruhe) Karlsruhe January 2003 How to make a light Higgs (without SUSY) Minimal models The Littlest Higgs and the Minimal Moose Phenomenology
More informationThe E&M of Holographic QCD
The E&M of Holographic QCD Oren Bergman Technion and IAS O.B., G. Lifschytz, M. Lippert arxiv: 0802.3720, 080m.xxxx Also: Johnson, Kundu 0803.0038 Kim, Sin, Zahed 0803.0318 So you see, string theory provides
More information