Chiral symmetry breaking and external fields in the Kuperstein-Sonnenschein model

dc.contributor.advisorKaplunovsky, Vadimen
dc.contributor.committeeMemberPaban, Soniaen
dc.creatorAlam, Muhammad Sohaiben
dc.date.accessioned2012-08-02T19:38:38Zen
dc.date.available2012-08-02T19:38:38Zen
dc.date.issued2012-05en
dc.date.submittedMay 2012en
dc.date.updated2012-08-02T19:38:46Zen
dc.descriptiontexten
dc.description.abstractA novel holographic model of chiral symmetry breaking has been proposed by Kuperstein and Sonnenschein by embedding non-supersymmetric probe D7 and anti-D7 branes in the Klebanov-Witten background. We study the dynamics of the probe flavours in this model in the presence of finite temperature and a constant electromagnetic field. In keeping with the weakly coupled field theory intuition, we find the magnetic field promotes spontaneous breaking of chiral symmetry whereas the electric field restores it. The former effect is universally known as the ``magnetic catalysis" in chiral symmetry breaking. In the presence of an electric field such a condensation is inhibited and a current flows. Thus we are faced with a steady-state situation rather than a system in equilibrium. We conjecture a definition of thermodynamic free energy for this steady-state phase and using this proposal we study the detailed phase structure when both electric and magnetic fields are present in two representative configurations: mutually perpendicular and parallel.en
dc.description.departmentPhysicsen
dc.format.mimetypeapplication/pdfen
dc.identifier.slug2152/ETD-UT-2012-05-5186en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2012-05-5186en
dc.language.isoengen
dc.subjectHolographyen
dc.subjectAdS/CFTen
dc.subjectChiral symmetry breakingen
dc.titleChiral symmetry breaking and external fields in the Kuperstein-Sonnenschein modelen
dc.type.genrethesisen
thesis.degree.departmentPhysicsen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Artsen

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