Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-06-17
Phys.Rev.C76:047305,2007
Physics
Nuclear Physics
Nuclear Theory
version accepted for publication in PRC
Scientific paper
10.1103/PhysRevC.76.047305
The unusual temperature behavior of the entropy of the antiferromagnetic (AFM) spin state in symmetric nuclear matter with the Gogny D1S interaction, being larger at low temperatures than the entropy of nonpolarized matter, is related to the dependence of the entropy on the effective masses of nucleons in a spin polarized state. The corresponding conditions for comparing the entropies of the AFM and nonpolarized states in terms of the effective masses are formulated, including low and high temperature limits. It is shown that the unexpected temperature behavior of the entropy of the AFM spin state at low temperatures is caused by the violation of the corresponding low temperature criterium.
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