A new treatment of the in-medium chiral condensates

Details A new treatment of the in-medium chiral condensates A new treatment of the in-medium chiral condensates

2003-09-26

arxiv.org/abs/hep-ph/0309304v1

Nucl.Phys.Proc.Suppl. 133 (2004) 259-264

Physics

High Energy Physics

High Energy Physics - Phenomenology

contribution to the QCD 2003 conference in Montpellier

Scientific paper

10.1016/j.nuclphysbps.2004.04.17

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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