Dresden 2013 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 21: Nukleare Astrophysik
HK 21.5: Talk
Monday, March 4, 2013, 18:00–18:15, HSZ-403
Neutrino interactions with dense nuclear matter based on chiral effective field theory⋆ — •Alexander Bartl1,2, Christopher J. Pethick3,4, and Achim Schwenk2,1 — 1Institut für Kernphysik, Technische Universität Darmstadt, Germany — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — 3The Niels Bohr International Academy, The Niels Bohr Institute, Copenhagen, Denmark — 4NORDITA, Royal Institute of Technology and Stockholm University, Stockholm, Sweden
Neutrino pair bremsstrahlung and absorption (NN↔ NNνν) and inelastic scattering of neutrinos (NNν↔ν NN) are of great relevance for the generation of and energy transport by neutrinos in core-collapse supernovae. While the rates of these processes are very important, most simulations are based on the one-pion-exchange approximation for the nucleon-nucleon part of the interaction. In this talk, we will present results on neutrino rates at subnuclear densities that are calculated using the framework of chiral effective field theory for nuclear forces, including first results for mixtures of neutrons and protons. In addition, we consider the impact of chiral two-body currents on the neutrino rates.
⋆Supported by the Helmholtz Alliance HA216/EMMI and the DFG through SFB 634.