Liquid-gas phase transition in nuclei in the relativistic Thomas-Fermi theory

Details Liquid-gas phase transition in nuclei in the relativistic Thomas-Fermi theory Liquid-gas phase transition in nuclei in the relativistic Thomas-Fermi theory

2000-12-16

arxiv.org/abs/nucl-th/0012061v1

Phys.Rev. C63 (2001) 054604

Physics

Nuclear Physics

Nuclear Theory

RevTex file(19 pages) and 12 psfiles for fugures. Physical Review C (in Press)

Scientific paper

10.1103/PhysRevC.63.054604

The equation of state (EOS) of finite nuclei is constructed in the relativistic Thomas-Fermi theory using the non-linear $\sigma-\omega -\rho$ model. The caloric curves are calculated by confining the nuclei in the freeze-out volume taken to be a sphere of size about 4 to 8 times the normal nuclear volume. The results obtained from the relativistic theory are not significantly different from those obtained earlier in a non-relativistic framework. The nature of the EOS and the peaked structure of the specific heat $C_v$ obtained from the caloric curves show clear signals of a liquid-gas phase transition in finite nuclei. The temperature evolution of the Gibbs potential and the entropy at constant pressure indicate that the characteristics of the transition are not too different from the first-order one.

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