Study of phases in a holographic QCD model

2019/06/26 by Varun Sethi, Sethi, Varun
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #hep-th

paper · pdf · doi:10.48550/arxiv.1906.10932

Article, 25 pages, 15 figures, 4 tables. v2: References added, discussion enhanced, presentation improved, title slightly changed

arxiv created 2019/11/20 · arxiv updated 2019/11/22

Abstract

Witten-Sakai-Sugimoto model is used to study two flavour Yang-Mills theory with large number of colours at finite temperature and in presence of chemical potential for baryon number and isospin. Sources for U(1)_B and U(1)₃ gauge fields on the flavour 8-branes are D4-branes wrapped on S⁴ part of the background. Here, gauge symmetry on the flavour branes has been decomposed as U(2) ≡ U(1)_B × SU(2) and U(1)₃ is within SU(2) and generated by the diagonal generator. We show various brane configurations, along with the phases in the boundary theory they correspond to, and explore the possibility of phase transition between various pairs of phases.

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