The pasta phase within density dependent hadronic models

Details The pasta phase within density dependent hadronic models The pasta phase within density dependent hadronic models

2008-12-17

arxiv.org/abs/0812.3170v1

Phys.Rev.C79:035804,2009

Physics

Nuclear Physics

Nuclear Theory

15 pages, 11 figures and 7 tables

Scientific paper

10.1103/PhysRevC.79.035804

In the present paper we investigate the onset of the pasta phase with different parametrisations of the density dependent hadronic model and compare the results with one of the usual parametrisation of the non-linear Walecka model. The influence of the scalar-isovector virtual delta meson is shown. At zero temperature two different methods are used, one based on coexistent phases and the other on the Thomas-Fermi approximation. At finite temperature only the coexistence phases method is used. npe matter with fixed proton fractions and in beta-equilibrium are studied. We compare our results with restrictions imposed on the the values of the density and pressure at the inner edge of the crust, obtained from observations of the Vela pulsar and recent isospin diffusion data from heavy-ion reactions, and with predictions from spinodal calculations.

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