Aftab Ahmad Current Address: Institute of Physics and Mathematics UMSNH Morelia Mexico (IFM-UMSNH). Cell# +(52) 4434383317. Email: aftabahmad@ifm.umich.mx: aftab.gu@gmail.com. Permanent Address: Department of Physics, Gomal University, D. I. Khan, Academic Qualification: M. Sc. Physics (2003-2005) From Gomal University, D. I. Khan (K. P. K), M. Phil / M.S High Energy Physics (2000-2002) From CHEP, Punjab University, Lahore, Title of M.Phil Thesis: Non-perturbative Gluon Propagator. Supervisor: Prof. Dr. Bilal Masud Ph. D High Energy Physics (2012-2016) from IFM-UMSNH, Morelia, Mexico. Title Of Ph.D Thesis: QCD Phase Diagram from Constant Quark Masses. Supervisor: Prof. Dr. Alfredo Raya. Distinction and Awards 1. Gold Medal In M.Sc. Physics 2. Orient Dr. A.Q. Khan Science Awards 2003, Islamabad Pakistan 3. Award of Ph. D fellowship from March- 2012 to Feb.- 2016: Awarded by CONACYT Mexico
Publications and work in progress 1 ). A. Ahmad, A. Raya, J. Phys.: Conf. Ser. 468 012009 (2013). 2) E. Gutiérrez, A. Ahmad, A. Ayala, A. Bashir and A. Raya, J. Phys. G 41 075002 (2014). 3) F. Marquez, A. Ahmad, M. Buballa and A. Raya, Phys. Lett. B 747 529 535 (2015). 4) A. Ahmad, A. Ayala, A. Bashir, E. Gutiérrez and A. Raya, J. Phys.: Conf. Ser. 651 012018 (2015). 5) A. Ahmad, A. Raya, e-print: arxiv:1602.06448 (2016). 6) A. Ahmad, et al., QCD Phase Diagram from Constant Mass Approximation, in progress. 7) A. Ahmad, et al., QCD Phase Diagram from Contact Interaction Model for Quarks, in progress. Talks and Poster presentation in Conferences, Workshops and Schools 1. Poster presented with Title Solution of QCD Gap Equation with Lattice Inspired Gluon propagator Models XV Mexican School on Particles and Fields, Sep 05-15, 2012, Puebla Mexico. 2. Talk given with title Solution of QCD Gap Equation with Lattice Inspired Gluon propagator Models in the LV Congreso Nacional de Física Morelia, Michoacán, del 8 al 12 de Octubre de 2012. 3. Talk given with the title Quark condensate at finite temperature from the Schwinger-Dyson Equations in the 4 th International Workshop on Non Perturbative Aspects of Field Theory, UMSNH, Morelia, Michoacán, 2013, Mexico. 4. Talk given with title Quark condensate in QCD at finite temperature School on Spinning Particles in Quantum Field Theory, World Line Formalism, Higher Spins and Conformal Geometry, 5-9 November 2013, San Cristobal de las casas, Chiapas, México
5. Talk given with title QCD Phase Diagram and the Constant Mass Approximation in the XIV Mexican Workshop on Particles and Fields, Dec. 25-29, 2013, Oaxaca de Juarez, Oax, Mexico. 6. Talk given with title QCD Phase diagram from vector-vector contact interaction in 7 th International Meeting on particles and Fields, Apr. 01-04, 2014 Lahore, 7. Talk given in WNPAFT 2015 Morelia, Mexico. May 4-8, 2015. 8. Talk given in the Workshop on "mini-simposio" on QCD, Oct. 14-16, 2015 Conferences, Workshops and Schools Attended: 1) 4 th Particle Physics workshop held on November, 14-19, 2005 at National Centre for physics, Quaid-e-Azam University, Islamabad 4) First NCP Scientific Spring 2009 on April 6 9, 2009 at National Centre for Physics Islamabad 5) Training Course on RS & GIS Applications in Natural resources Management 17-20 Nov 2009, SUPARCO Islamabad 6) First School on LHC Physics on October 12 th -30 th, 2009 at National Centre for Physics Islamabad 7) Conference on General Relativity& Gravitation on February 11-13, 2010, Department of Mathematics University Of the Punjab, Lahore, 8) International Scientific Spring 2010 on March 01-06, 2010 at National Centre for Physics Shahdrah Valley Road Islamabad,
9) 5 th Particle Physics workshop held on November, 20-25, 2006 at National Centre for physics, Quaid-e-Azam University, Islamabad 10) Scientific Thinking, Creativity and Society on February 28, 2009 at National Centre for Physics, Islamabad 11) VIII Escuela de Fisica Fundamental 5 al 9 de agosto de 2013, Hermosillo, Sonora, Mexico. 12) BCVSPIN-MSPF-Mitchell, Advanced School in Particle Physics and Cosmology, December 8-13, 2014 Manzanillo, México. Research Interest Quantum Chromodynamics (QCD) is the theory of the strong color forces among the quarks. QCD at finite temperature and chemical potential plays an important role to understand the different transitions that took place in the early universe, after a few micro seconds from the Big Bang. As it is known, the observable degrees of freedom of quantum chromodynamics (QCD) at low temperature are the color-singlet hadrons, while at high temperature, these composite objects split up in a new phase where the dominant degrees of freedom are quarks and gluons. This phase transition is referred to as confinement-deconfinement transition. The vanishing of dynamically generated quark mass at high temperature and/or chemical potential corresponds to another type of transition i.e., chiral symmetry restoration, while at zero temperature and chemical potential, chiral symmetry is broken. Thus, when the strength of the QCD interaction diminishes with increasing temperature and chemical, only the current quark masses survive when temperature and chemical exceed a set of critical values. This is the chiral symmetry breaking-restoration phase transition. As for experiment is concerned, implications of chiral symmetry breaking for the elastic and transition form factors of mesons and baryons form an integral part of the planned program at the $12$ GeV upgrade of the Thomas Jefferson National Accelerator Facility in Virginia. There are other experiments around the world that might help to understand the confinement and chiral transitions like RHIC in Brookhaven, LHC at CERN, and future experiment proposals like CBM at FAIR, in Germany. In the past few years, the effect of an external magnetic field on the QCD phase transitions has opened an interesting area of research where phenomena such as Magnetic Catalysis (MC) and Inverse Magnetic Catalysis (IMC) could take place and modify the behavior of hadron matter. Experimental motivation behind this fact comes from peripheral heavy-ion collisions, since not all the nucleons are participants in the reaction, because they are electric charges in motion, they produce in the interaction region a very strong magnetic field which quickly weakens, but whose effects can be measured in experiments.
There are several approaches (Schwinger-Dyson Equations, Lattice and effective models (NJLmodel, Linear sigma model etc.) to understand the QCD Phase transitions. I am basically interested in to understand these phase transitions by using Schwinger-Dyson equations and also from some effective model like NJL etc. I am also interested in to understand how the magnetic field effect the QCD phase diagram under the influence of strong magnetic field at zero density as well as at finite density, at zero temperature but finite density. References 1. Prof. Dr. Alfredo raya Email: raya@ifm.umich.mx. 2). Prof. Dr. Adnan Bashir Email: adnan@ifm.umich.mx 3). Prof. Dr. Bilal Masud CHEP, University of the Punjab, Lahore, Email. bilalmasud.chep@pu.edu.pk