Warm “pasta” phase in the Thomas-Fermi approximation

SS Avancini, S Chiacchiera, DP Menezes… - Physical Review C …, 2010 - APS
Physical Review C—Nuclear Physics, 2010APS
In the present article, the “pasta” phase is studied at finite temperatures within a Thomas-
Fermi (TF) approach. Relativistic mean-field models, both with constant and density-
dependent couplings, are used to describe this frustrated system. We compare the present
results with previous ones obtained within a phase-coexistence description and conclude
that the TF approximation gives rise to a richer inner “pasta” phase structure and the
homogeneous matter appears at higher densities. Finally, the transition density calculated …
In the present article, the “pasta” phase is studied at finite temperatures within a Thomas-Fermi (TF) approach. Relativistic mean-field models, both with constant and density-dependent couplings, are used to describe this frustrated system. We compare the present results with previous ones obtained within a phase-coexistence description and conclude that the TF approximation gives rise to a richer inner “pasta” phase structure and the homogeneous matter appears at higher densities. Finally, the transition density calculated within TF is compared with the results for this quantity obtained with other methods.
American Physical Society
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