Collective modes in relativistic asymmetric nuclear matter

Journal Article · Fri Apr 01 00:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.044323· OSTI ID:20696069

Avancini, S S; Menezes, D P ^[1]; Brito, L; Providencia, C ^[2]

---

1. Departamento de Fisica, CFM, Universidade Federal de Santa Catarina, Florianopolis, SC, CP. 476, CEP 88.040, 900 (Brazil)
2. Centro de Fisica Teorica, Departamento de Fisica, Universidade de Coimbra, P-3004-516, Coimbra (Portugal)

Isospin and density waves in asymmetric nuclear matter (ANM) are studied in the framework of relativistic mean-field hadron models. A semiclassical relativistic approach based on the Vlasov equation is applied to the study of infinite asymmetric nuclear matter. The isovector and isoscalar collective modes are determined for a wide range of densities as a function of isospin asymmetry and momentum transfer. The condition for the existence of each type of mode is referred. The instabilities of ANM, related to the liquid-gas phase transition, are investigated.

• OSTI ID: 20696069
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 71, Issue 4; Other Information: DOI: 10.1103/PhysRevC.71.044323; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
BOLTZMANN-VLASOV EQUATION
HADRONS
ISOSPIN
ISOVECTORS
MEAN-FIELD THEORY
MOMENTUM TRANSFER
NUCLEAR MATTER
PHASE TRANSFORMATIONS
QUANTUM FIELD THEORY
RELATIVISTIC RANGE
SEMICLASSICAL APPROXIMATION