Relativistic meanfield model with energy dependent selfenergies
Abstract
Conventional relativistic meanfield theory is extended with the introduction of higherorder derivative couplings of nucleons with the meson fields. The EulerLagrange equations follow from the principle of stationary action. From invariance principles of the Lagrangian density the most general expressions for the conserved current and energymomentum tensor are derived. The nucleon selfenergies show the explicit dependence on the meson fields. They contain additional regulator functions which describe the energy dependence. The density dependence of mesonnucleon couplings causes the apperance of additional rearrangement contributions in the selfenergies. The equation of state of infinite nuclear matter is obtained and the thermodynamical consistency of the model is demonstrated. This model is applied to the description of spherical, nonrotating stars in βequilibrium. Stellar structure is calculated by solving the TolmanOppenheimerVolkov (TOV) equations. The results for neutron stars are shown in terms of massradius relations.
 Authors:
 GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)
 Publication Date:
 OSTI Identifier:
 22390982
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: AIP Conference Proceedings; Journal Volume: 1645; Journal Issue: 1; Conference: Carpathian Summer School of Physics 2014, Sinaia (Romania), 1326 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ENERGY DEPENDENCE; ENERGYMOMENTUM TENSOR; EQUATIONS OF STATE; INVARIANCE PRINCIPLES; LAGRANGE EQUATIONS; LAGRANGIAN FUNCTION; MEANFIELD THEORY; MESONS; NEUTRON STARS; NUCLEAR MATTER; NUCLEONS; RELATIVISTIC RANGE; SELFENERGY; STAR MODELS
Citation Formats
Antic, S., and Typel, S.. Relativistic meanfield model with energy dependent selfenergies. United States: N. p., 2015.
Web. doi:10.1063/1.4909585.
Antic, S., & Typel, S.. Relativistic meanfield model with energy dependent selfenergies. United States. doi:10.1063/1.4909585.
Antic, S., and Typel, S.. Tue .
"Relativistic meanfield model with energy dependent selfenergies". United States.
doi:10.1063/1.4909585.
@article{osti_22390982,
title = {Relativistic meanfield model with energy dependent selfenergies},
author = {Antic, S. and Typel, S.},
abstractNote = {Conventional relativistic meanfield theory is extended with the introduction of higherorder derivative couplings of nucleons with the meson fields. The EulerLagrange equations follow from the principle of stationary action. From invariance principles of the Lagrangian density the most general expressions for the conserved current and energymomentum tensor are derived. The nucleon selfenergies show the explicit dependence on the meson fields. They contain additional regulator functions which describe the energy dependence. The density dependence of mesonnucleon couplings causes the apperance of additional rearrangement contributions in the selfenergies. The equation of state of infinite nuclear matter is obtained and the thermodynamical consistency of the model is demonstrated. This model is applied to the description of spherical, nonrotating stars in βequilibrium. Stellar structure is calculated by solving the TolmanOppenheimerVolkov (TOV) equations. The results for neutron stars are shown in terms of massradius relations.},
doi = {10.1063/1.4909585},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1645,
place = {United States},
year = {Tue Feb 24 00:00:00 EST 2015},
month = {Tue Feb 24 00:00:00 EST 2015}
}

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