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In-medium meson effects on the equation of state of hot and dense nuclear matter

Ji-sheng Chen, Peng-fei Zhuang, Jia-rong Li

nucl-tharXiv:nucl-th/0209074

Abstract

The influence of the in-medium mesons on the effective nucleon mass and in turn on the equation of state of hot/dense nuclear matter is discussed in the Walecka model. Due to the self-consistent treatment of couplings between nucleons and σ and ω mesons, the temperature and density dependence of the effective hadron masses approaches more towards the Brown-Rho scaling law, and the compression modulus K is reduced from 550 MeV in mean field theory to an accepted value 318.2 MeV.

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