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Chiral Phase Transition beyond Mean Field Approximation

2007/09/14 by Lianyi He, He, Lianyi, Pengfei Zhuang +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #cond-mat.supr-con #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.0709.2246

5 pages, 4 figures

arxiv created 2007/09/14 · arxiv updated 2009/12/01

Abstract

Based on the analogy between the Nambu--Jona-Lasinio model of chiral symmetry breaking and the BCS theory of superconductivity, we investigate the effect of q q pair fluctuations on the chiral phase transition. We include uncondensed q q pairs at finite temperature and chemical potential in a self-consistent T-matrix formalism, the so-called G0 G scheme. The pair fluctuations reduce significantly the critical temperature and make quarks massive above the critical temperature.

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