Warm ''pasta'' phase in the Thomas-Fermi approximation

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.055807· OSTI ID:21499223

Avancini, Sidney S; Menezes, Debora P ^[1]; Chiacchiera, Silvia; Providencia, Constanca ^[2]

---

1. Departamento de Fisica, CFM, Universidade Federal de Santa Catarina, Florianopolis, SC, CP. 476, CEP 88040-900 (Brazil)
2. Centro de Fisica Computacional, Department of Physics, University of Coimbra, P3004-516 Coimbra (Portugal)

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.

• OSTI ID: 21499223
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevC.82.055807; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
COMPARATIVE EVALUATIONS
COUPLING
DENSITY
MEAN-FIELD THEORY
RELATIVISTIC RANGE
THOMAS-FERMI MODEL
ATOMIC MODELS
CALCULATION METHODS
ENERGY RANGE
EVALUATION
MATHEMATICAL MODELS
PHYSICAL PROPERTIES