2011/08/09 by Felipe J. Llanes-Estrada, Felipe J. Llanes–Estrada, Gaspar Moreno Navarro · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Atomic and Subatomic Physics Research #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph.HE #hep-ph #nucl-th
paper · pdf · doi:10.1142/s0217732312500332
published as Modern Physics Letters A 27, 1250033 (2012) · 3 pages, 9 figures
arxiv created 2011/08/09 · openalex publication_date 2012/02/28 · arxiv updated 2014/01/28 · openalex created_date 2020/07/02 · openalex updated_date 2026/08/04
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 Δ 3/2 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.