Nuclear Incompressibility at Finite Temperature and Entropy

Details Nuclear Incompressibility at Finite Temperature and Entropy Nuclear Incompressibility at Finite Temperature and Entropy

2004-08-05

arxiv.org/abs/nucl-th/0408016v1

Phys.Lett. B621 (2005) 239-245

Physics

Nuclear Physics

Nuclear Theory

5 pages

Scientific paper

10.1016/j.physletb.2005.06.066

Features of the nuclear isothermal incompressibility $\kappa$ and adiabatic incompressibility $\kappa_Q$ 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 $\kappa_Q$ decreases with increasing entropy while the isothermal $\kappa$ increases with increasing $T$. A duality is found between the adiabatic $\kappa_Q$ and the T=0 isothermal $\kappa$. Our isothermal results are compared with a recent lattice Monte Carlo calculation done at finite $T$. The necessity of including correlations is shown if $\kappa$ is to have a peak with increasing $T$ as seen in the Monte Carlo calculations. A peak in $\kappa$ 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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