A Relativistic Mean Field Theory for Nuclear Matter with , Meson Couplings at T 0

Effects of temperature in hadron dense matter are studied within a generalized relativistic mean field approach based on the naturalness of the various coupling constants of the theory. The lagrangian density of the formulation contains the fundamental baryon octet and nonlinear self interaction com...

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Bibliographic Details
Published in:AIP conference proceedings 2004-12, Vol.739 (1), p.470-472
Main Authors: Bodmann, Bardo E J, Mesquita, Alexandre, Vasconcellos, Cesar A Z, Dillig, Manfred
Format: Article
Language:English
Subjects:
BARYON OCTETS
COUPLING CONSTANTS
DENSITY
FIELD EQUATIONS
LAGRANGIAN FUNCTION
MEAN-FIELD THEORY
MESON-BARYON INTERACTIONS
MESON-MESON INTERACTIONS
NEUTRON STARS
NONLINEAR PROBLEMS
NUCLEAR MATTER
OMEGA-782 MESONS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM FIELD THEORY
RELATIVISTIC RANGE
RESONANCE PARTICLES
REST MASS
RHO-770 MESONS
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Summary:Effects of temperature in hadron dense matter are studied within a generalized relativistic mean field approach based on the naturalness of the various coupling constants of the theory. The lagrangian density of the formulation contains the fundamental baryon octet and nonlinear self interaction components of the and meson fields coupled to the baryons and to the and meson fields. We adjust the model parameters to describe bulk static properties of ordinary nuclear matter and neutron stars, in the framework of the Sommerfeld approximation, at the T 0 domain. Through integration of the TOV equations we obtain standard plots for the mass and mass-radius of protoneutron stars as a function of the central density and temperature. Our results indicate an absolute value for the protoneutron star limiting mass at low and intermediate temperature regimes.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.1843625