T-μ phase diagram of the chiral quark model from a large flavor number expansion

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29 Citations (Scopus)

Abstract

The chiral phase boundary of strong matter is determined in the T-μ plane from the chiral quark model, applying a non-perturbatively renormalised treatment, involving chains of pion-bubbles and 1-loop fermion contributions. In the absence of explicit symmetry breaking the second order portion of the phase boundary and the location of the tricritical point (TCP) are determined analytically. Sensitivity of the results to the renormalisation scale is carefully investigated. The softening of the σ-pole near the second order transitions is confirmed.

Original languageEnglish
Pages (from-to)179-186
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume582
Issue number3-4
DOIs
Publication statusPublished - Mar 4 2004

Keywords

  • Finite density
  • Large N approximation
  • Tricritical point

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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