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Nuclear Incompressibility at Finite Temperature and Entropy

A. Z. Mekjian·S. J. Lee·L. Zamick
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Abstract

Features of the nuclear isothermal incompressibility $κ$ and adiabatic incompressibility $κ_Q$ are investigated. The calculations are done at zero and finite temperatures and non zero entropy and for several equations of state. It is shown that $κ_Q$ decreases with increasing entropy while the isothermal $κ$ increases with increasing $T$. A duality is found between the adiabatic $κ_Q$ and the T=0 isothermal $κ$. Our isothermal results are compared with a recent lattice Monte Carlo calculation done at finite $T$. The necessity of including correlations is shown if $κ$ is to have a peak with increasing $T$ as seen in the Monte Carlo calculations. A peak in $κ$ is linked to attractive scattering correlations in two nucleons channel in the virial expansion in our approach which are Pauli blocked at low $T$.

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A. Z. Mekjian, S. J. Lee, L. Zamick. 2004-08-05. Nuclear Incompressibility at Finite Temperature and Entropy. https://doi.org/10.1016/j.physletb.2005.06.066

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