Many-Body Corrections to Charged-Current Neutrino Absorption Rates in Nuclear Matter

Details Many-Body Corrections to Charged-Current Neutrino Absorption Rates in Nuclear Matter Many-Body Corrections to Charged-Current Neutrino Absorption Rates in Nuclear Matter

1998-04-24

arxiv.org/abs/astro-ph/9804264v1

Phys.Rev.C59:510-514,1999

Astronomy and Astrophysics

Astrophysics

11 pages, APS REVTeX format, 1 PostScript figure, uuencoded compressed, and tarred, submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevC.59.510

Including nucleon--nucleon correlations due to both Fermi statistics and nuclear forces, we have developed a general formalism for calculating the charged--current neutrino--nucleon absorption rates in nuclear matter. We find that at one half nuclear density many--body effects alone suppress the rates by a factor of two and that the suppression factors increase to $\sim$5 at $4\times10^{14}$ g cm$^{-3}$. The associated increase in the neutrino--matter mean--free--paths parallels that found for neutral--current interactions and opens up interesting possibilities in the context of the delayed supernova mechanism and protoneutron star cooling.

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