A new treatment of the in-medium chiral condensates

2003/09/26 by Guang-Xiong Peng, G. X. Peng, M. Loewe +3 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/j.nuclphysbps.2004.04.175

published as Nucl.Phys.Proc.Suppl. 133 (2004) 259-264 · contribution to the QCD 2003 conference in Montpellier

arxiv created 2003/09/26 · openalex publication_date 2004/07/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A new formalism to calculate the in-medium chiral condensate is presented. At lower densities, this approach leads to a linear expression. If we demand a compatibility with the famous model-independent result, then the pion-nucleon sigma term should be six times the average current mass of light quarks. QCD-like interactions may slow the decreasing behavior of the condensate with increasing densities, compared with the linear extrapolation, if densities are lower than twice the nuclear saturation density. At higher densities, the condensate vanishes inevitably.

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• Chiral dynamics and pion properties at finite temperature and isospin chemical potential

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