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Title:
Cubic Neutrons
Authors:
Llanes-Estrada, Felipe J.; Navarro, Gaspar Moreno
Affiliation:
AA(Departamento de Física Teórica I, Univ. Complutense de Madrid, 28040 Madrid, Spain; ), AB(Departamento de Física Teórica I, Univ. Complutense de Madrid, 28040 Madrid, Spain)
Publication:
Modern Physics Letters A, Volume 27, Issue 06, id. 1250033-1-1250033-7 (MPLA Homepage)
Publication Date:
00/2012
Origin:
WSPC
Keywords:
Hadron deformation, neutron stars, equation of state of neutron matter
PACS Keywords:
Nuclear matter aspects of neutron stars, Protons and neutrons
Abstract Copyright:
(c) 2012: World Scientific Publishing Company
DOI:
10.1142/S0217732312500332
Bibliographic Code:
2012MPLA...2750033L

Abstract

The neutron is largely spherical and incompressible in atomic nuclei. These two properties are however challenged in the extreme pressure environment of a neutron star. Our variational computation within the Cornell model of Coulomb gauge QCD shows that the neutron (and also the Δ3/2 baryon) can adopt cubic symmetry at an energy cost of about 150 MeV. Balancing this with the free energy gained by tighter neutron packing, we expose the possible softening of the equation of state of neutron matter.
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