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Title: Short range correlations in relativistic nuclear matter models

Abstract

Short range correlations are introduced using the unitary correlation method in a relativistic approach to the equation of state of the infinite nuclear matter in the framework of the Hartree-Fock approximation. It is shown that the correlations give rise to an extra node in the ground state wave function in the nucleons, contrary to what happens in nonrelativistic calculations with a hard core. The effect of the correlations on the ground state properties of nuclear and neutron matter is studied. The nucleon effective mass and equation of state (EOS) are very sensitive to short range correlations. In particular, if the pion contact term is neglected, a softening of the EOS is predicted. Correlations have also an important effect on the neutron matter EOS which presents no binding but only a very shallow minimum, contrary to the Walcka model.

Authors:
; ;  [1]
  1. Departamento de Fisica, Universidade de Coimbra, 3004-516 Coimbra (Portugal)
Publication Date:
OSTI Identifier:
20771397
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.73.035805; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CORRELATIONS; EFFECTIVE MASS; EQUATIONS OF STATE; GROUND STATES; HARTREE-FOCK METHOD; NUCLEAR MATTER; NUCLEONS; PIONS; RELATIVISTIC RANGE; WAVE FUNCTIONS

Citation Formats

Panda, P.K., Providencia, Joao da, and Providencia, Constanca. Short range correlations in relativistic nuclear matter models. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.035805.
Panda, P.K., Providencia, Joao da, & Providencia, Constanca. Short range correlations in relativistic nuclear matter models. United States. doi:10.1103/PhysRevC.73.035805.
Panda, P.K., Providencia, Joao da, and Providencia, Constanca. Wed . "Short range correlations in relativistic nuclear matter models". United States. doi:10.1103/PhysRevC.73.035805.
@article{osti_20771397,
title = {Short range correlations in relativistic nuclear matter models},
author = {Panda, P.K. and Providencia, Joao da and Providencia, Constanca},
abstractNote = {Short range correlations are introduced using the unitary correlation method in a relativistic approach to the equation of state of the infinite nuclear matter in the framework of the Hartree-Fock approximation. It is shown that the correlations give rise to an extra node in the ground state wave function in the nucleons, contrary to what happens in nonrelativistic calculations with a hard core. The effect of the correlations on the ground state properties of nuclear and neutron matter is studied. The nucleon effective mass and equation of state (EOS) are very sensitive to short range correlations. In particular, if the pion contact term is neglected, a softening of the EOS is predicted. Correlations have also an important effect on the neutron matter EOS which presents no binding but only a very shallow minimum, contrary to the Walcka model.},
doi = {10.1103/PhysRevC.73.035805},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}