Neutrino scattering in supernovae and spin correlations of a unitary gas

Abstract

Core collapse supernova simulations can be sensitive to neutrino interactions near the neutrinosphere. This is the surface of last scattering. We model the neutrinosphere region as a warm unitary gas of neutrons. A unitary gas is a low density system of particles with large scattering lengths. We calculate modifications to neutrino scattering cross sections because of the universal spin and density correlations of a unitary gas. These correlations can be studied in laboratory cold atom experiments. We find significant reductions in cross sections, compared to free space interactions, even at relatively low densities. These reductions could reduce the delay time from core bounce to successful explosion in multidimensional supernova simulations.

5 pages, 2 figures, minor corrections in response to referee, Phys. Rev. C in press

References in corpus (11)

• Virial expansion for a strongly correlated Fermi gas
• Influence of light nuclei on neutrino-driven supernova outflows
• Neutrino-nucleon scattering in supernova matter from the virial expansion
• Dynamic spin response of a strongly interacting Fermi gas
• Neutrino Breakup of A=3 Nuclei in Supernovae
• The Neutrino Response of Low-Density Neutron Matter from the Virial Expansion
• Role of medium modifications for neutrino-pair processes from nucleon-nucleon bremsstrahlung - Impact on the protoneutron star deleptonization
• Charged-current reactions in the supernova neutrino-sphere
• Charged current neutrino interactions in core-collapse supernovae in a virial expansion
• Impact of Nucleon-Nucleon Bremsstrahlung Rates Beyond One-Pion Exchange
• Neutrino-pair bremsstrahlung from nucleon-$\alpha$ versus nucleon-nucleon scattering

Cited by in corpus (8)

• Muon Creation in Supernova Matter Facilitates Neutrino-driven Explosions
• Neutrinos and nucleosynthesis of elements
• Structure Factors for Hot Neutron Matter from Ab Initio Lattice Simulations with High-Fidelity Chiral Interactions
• Structure Factors of Neutron Matter at Finite Temperature
• Quantum Many-Body Calculations using Body-Centered Cubic Lattices
• Neutrino-Neutron Scattering Opacities in Supernova Matter
• The thermal index of neutron-star matter in the virial approximation
• Effect of chiral nuclear forces on the neutrino mean free path in hot neutron matter