Realistic neutrino opacities for supernova simulations with correlations and weak magnetism

C. J. Horowitz, M. A. Pérez-García

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38 Scopus citations

Abstract

Advances in neutrino transport allow realistic neutrino interactions to be incorporated into supernova simulations. We add tensor couplings to relativistic random phase approximation calculations of neutrino opacities. Our results reproduce free-space neutrino-nucleon cross sections at low density, including weak magnetism and recoil corrections. In addition, our opacities are thermodynamically consistent with relativistic mean field equations of state. We find antineutrino mean free paths that are considerably larger then those for neutrinos. This difference depends little on density. In a supernova, this difference could lead to an average energy of ν̄μ that is larger than that for vμ by an amount that is comparable to the energy difference between νμ and ν̄e.

Original languageEnglish
Article number025803
Pages (from-to)258031-258039
Number of pages9
JournalPhysical Review C - Nuclear Physics
Volume68
Issue number2
DOIs
StatePublished - Aug 2003
Externally publishedYes

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