Naturalness of Nonlinear Scalar Self-Couplings in a Relativistic Mean Field Theory for Neutron Stars

Journal Article · Thu Dec 02 00:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1843632· OSTI ID:20630367

Maekawa, Claudio ^[1]; Razeira, Moises; Vasconcellos, Cesar A. Z. ^[2]; Dillig, Manfred ^[3]; Bodmann, Bardo E. J. ^[4]

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1. Departamento de Fisica, Fundacao Universidade Federal de Rio Grande, CEP 96201-900 Rio Grande (Brazil)
2. Instituto de Fisica, Universidade Federal do Rio Grande do Sul, CEP 91501-970 Porto Alegre, Rio Grande do Sul (Brazil)
3. Institut fuer Theoretische Physik III, der Universitaet Erlangen-Nuernberg, D91058 Erlangen (Germany)
4. Instituto de Fisica e Matematica, Universidade Federal de Pelotas, CEP 96010-900 Pelotas, Rio Grande do Sul (Brazil)

We investigate the role of naturalness in effective field theory. We focus on dense hadronic matter using a generalized relativistic multi-baryon lagrangian density mean field approach which contains nonlinear self-couplings of the {sigma}, {delta} meson fields and the fundamental baryon octet. We adjust the model parameters to describe bulk static properties of ordinary nuclear matter. Then, we show that our approach represents a natural modelling of nuclear matter under the extreme conditions of density as the ones found in the interior of neutron stars.

• OSTI ID: 20630367
• Journal Information: AIP Conference Proceedings, Vol. 739, Issue 1; Conference: Joint meeting on QCD and QCP: 9. hadron physics and 7. relativistic aspects of nuclear physics, Rio de Janeiro (Brazil), 28 Mar - 3 Apr 2004; Other Information: DOI: 10.1063/1.1843632; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON OCTETS
BARYONS
COUPLING
DENSITY
LAGRANGIAN FUNCTION
MEAN-FIELD THEORY
MESONS
NEUTRON STARS
NONLINEAR PROBLEMS
NUCLEAR MATTER
QUANTUM FIELD THEORY
RELATIVISTIC RANGE
RESONANCE PARTICLES
SCALARS