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 language | English |
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Article number | 025803 |
Pages (from-to) | 258031-258039 |
Number of pages | 9 |
Journal | Physical Review C - Nuclear Physics |
Volume | 68 |
Issue number | 2 |
DOIs | |
State | Published - Aug 2003 |
Externally published | Yes |