Neutron Stars with Delta-Resonances in the Walecka and Zimanyi-Moszkowski Models

Journal Article · Fri Nov 12 04:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3523204· OSTI ID:21506788

Fong, C T ^[1]; Oliveira, J C. T. ^[2]; Rodrigues, H ^[3]; Duarte, S B ^[4]

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1. Instituto Federal de Educacao, Ciencia e Tecnologia de Roraima, Av. Glaycon de Paiva 2496, 69303-340, Boa Vista, RR (Brazil)
2. Departamento de Fisica, Universidade Federal de Roraima, Campus do Paricarana s/n, 69310-270, Boa Vista, RR (Brazil)
3. Centro Federal de Educacao Tecnologica do Rio de Janeiro, Av. Maracana 229, 20271-110, Rio de Janeiro, RJ (Brazil)
4. Centro Brasileiro de Pesquisas Fisicas, Rua Dr. Xavier Sigaud 150, 22290-180, Rio de Janeiro, RJ (Brazil)

In the present work we have obtained the equation of state of the highly asymmetric dense stellar matter focusing on the delta resonance formation. We extended the nonlinear Walecka (NLW) and Zimanyi-Moszkowski (ZM) models to accommodate in the context of the relativistic mean field approximation the Rarita-Schwinger field for the spin 3/2 resonances. With the constructed stellar matter equations of state we solve numerically the TOV equation (Tolman-Oppenheimer-Volkoff) in order to determine the internal structure of neutron stars, and discuss the obtained masses versus radii diagram.

• OSTI ID: 21506788
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1296; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
APPROXIMATIONS
ASYMMETRY
BARYONS
BOSONS
CALCULATION METHODS
COMPUTERIZED SIMULATION
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
EQUATIONS OF STATE
FERMIONS
HADRONS
MASS
MATHEMATICAL MODELS
MEAN-FIELD THEORY
MESONS
NEUTRON STARS
NONLINEAR PROBLEMS
NUCLEAR MODELS
NUCLEAR STRUCTURE
PARTICLE PROPERTIES
RELATIVISTIC RANGE
RESONANCE
SIMULATION
SPIN
STARS
WALECKA MODEL