Dilaton and gluon condensate in a nucleon medium

TL;DR

This paper investigates how the gluon condensate varies with temperature and baryon density in a nucleon medium using an effective dilaton Lagrangian, revealing a 10% decrease at normal nuclear density.

Contribution

It introduces a method to calculate the gluon condensate's dependence on temperature and density using an effective dilaton approach, providing new insights into QCD in nuclear matter.

Findings

Gluon condensate decreases by about 10% at normal nuclear density.

The condensate's dependence on temperature and density is quantitatively modeled.

Effective dilaton Lagrangian effectively describes gluon condensate behavior in nuclear medium.

Abstract

The gluon condensate as a function of temperature and baryon density in a nucleon medium is obtained from an effective dilaton Lagrangian. It is shown that, at a normal nuclear density of nucleons, n_0 = 0.17 fm^{-3} the gluon condensate decreases by about 10%.