Neutrino mean free path in neutron stars

Abstract

The neutrino propagation in neutron stars is studied in the framework of the linear response method. The medium effects are treated in the non-relativistic Brueckner-Hartree-Fock approach either in the mean-field approximation or in the RPA. The residual interaction is expressed in terms of the Landau parameters extracted from the equation of state of spin- and isospin-polarized nuclear matter. The Brueckner theory including three-body forces is used for determining the equation of state. Numerical predictions for the response function of nuclear matter in $\beta$-equilibrium and the neutrino mean free path are presented in a range of baryonic densities and temperatures. The main results are a dominance of the charge-exchange component over the scattering component and an enhancement of the neutrino mean free path induced by nuclear correlations.

arXiv comment7 pages, 5 figures, RevTeX 4

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• Neutrinos and nucleosynthesis of elements
• Extended Skyrme interactions for nuclear matter, finite nuclei and neutron stars
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• Nuclear equation of state at high baryonic density and compact star constraints
• Nuclear response for the Skyrme effective interaction with zero-range tensor terms. III. Neutron matter and neutrino propagation
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• Impact of medium modification of the nucleon weak and electromagnetic form factors on the neutrino mean free path in dense matter
• Quenching factor of Gamow-Teller and spin dipole giant resonances
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• Neutrino Electromagnetic Form Factors Effect on the Neutrino Cross Section in Dense Matter
• Electroweak stars: how nature may capitalize on the standard model's ultimate fuel
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• Neutron Fraction and Neutrino Mean Free Path Predictions in Relativistic Mean Field Models
• Pairing effects on neutrino transport in low-density stellar matter
• Asymmetry of the neutrino mean free path in hot neutron matter under strong magnetic fields
• Linear response theory in asymmetric nuclear matter for Skyrme functionals including spin-orbit and tensor terms II: Charge Exchange
• Asymmetry of the neutrino mean free path in partially spin polarized neutron matter within the Skyrme model
• A Time Dependent Local Isospin Density Approximation Study of Asymmetric Nuclear Matter
• Supernova Detection at SNOLAB
• Effect of chiral nuclear forces on the neutrino mean free path in hot neutron matter