2003/05/09 by C. J. Horowitz, M. Ángeles Pérez-García, M. A. Perez-Garcia · 5 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #astro-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.68.025803
published as Phys.Rev. C68 (2003) 025803 · 15 pages, 10 figures, submitted to PRC, minor changes to figs. (9,10)
arxiv created 2003/05/09 · openalex publication_date 2003/08/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 \ensuremathν_\ensuremathμ that is larger than that for \ensuremathν_\ensuremathμ by an amount that is comparable to the energy difference between \ensuremathν_\ensuremathμ and \ensuremathνe.