Cubic neutrons

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 Delta-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.

3 pages, 9 figures

References in corpus (7)

• Shapiro delay measurement of a two solar mass neutron star
• Ab-initio Determination of Light Hadron Masses
• Constraints on neutron star radii based on chiral effective field theory interactions
• Model independent extraction of the proton charge radius from electron scattering
• Non-perturbative methods for a chiral effective field theory of finite density nuclear systems
• Probing the infrared quark mass from highly excited baryons
• Heavy Quark Fluorescence

Cited by in corpus (7)

• The Science of the Einstein Telescope
• Hadron matter in neutron stars in view of gravitational wave observations
• Maximum latent heat of neutron star matter independently of General Relativity
• Mapping chiral symmetry breaking in the excited baryon spectrum
• Constraining gravity with hadron physics: neutron stars, modified gravity and gravitational waves
• The lightest flavor--singlet qqq baryons as witnesses to color
• Maximum latent heat of neutron star matter without GR