Off-shell behavior of nucleon self-energy in asymmetric nuclear matter

The off-shell behavior of the nucleon self-energy in isospin-asymmetric nuclear matter is investigated within the framework of the relativistic Dirac-Brueckner-Hartree-Fock approach based on projection techniques. The dependence of the Dirac components of the self-energy on momentum as well as energ...

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Published in:Physical review. C, Nuclear physics Nuclear physics, 2010-07, Vol.82 (1), Article 014319
Main Authors: van Dalen, E. N. E., Müther, H.
Format: Article
Language:English
Subjects:
APPROXIMATIONS
ASYMMETRY
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
FUNCTIONS
HADRONS
HARTREE-FOCK METHOD
ISOSPIN
MASS
MATTER
NUCLEAR MATTER
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEONS
PARTICLE PROPERTIES
RELATIVISTIC RANGE
SELF-ENERGY
SPECTRAL FUNCTIONS
SYMMETRY
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description The off-shell behavior of the nucleon self-energy in isospin-asymmetric nuclear matter is investigated within the framework of the relativistic Dirac-Brueckner-Hartree-Fock approach based on projection techniques. The dependence of the Dirac components of the self-energy on momentum as well as energy is evaluated for symmetric as well as asymmetric nuclear matter. Special attention is paid to the various contributions to the momentum dependence of the real and imaginary part of the optical potential. The consequences to the different definitions of the effective nucleon mass and particle spectral functions are discussed.
doi_str_mv 10.1103/PhysRevC.82.014319
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subjects APPROXIMATIONS
ASYMMETRY
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
FUNCTIONS
HADRONS
HARTREE-FOCK METHOD
ISOSPIN
MASS
MATTER
NUCLEAR MATTER
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEONS
PARTICLE PROPERTIES
RELATIVISTIC RANGE
SELF-ENERGY
SPECTRAL FUNCTIONS
SYMMETRY
title Off-shell behavior of nucleon self-energy in asymmetric nuclear matter
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