Event calendar file
State of the Universe
Neutrino spin-coherence in a core-collapse supernova environment
by Dr. Amol Patwardhan (University of Wisconsin-Madison)
Tuesday, January 1, 2019
from
to
(Asia/Kolkata)
at A304
at A304
| Description |
We examine the prospects for coherent spin-transformations of Majorana neutrinos (i.e., neutrino-antineutrino transformations) in a core-collapse supernova environment. We observe that, under certain conditions, resonant effects can drive substantial neutrino-antineutrino conversion, with potential implications for subsequent flavor evolution as well as the neutron-to-proton ratio (equivalently, the electron fraction) of the material in the supernova envelope. We also investigate a nonlinear feedback mechanism that arises from the coupling between the neutrino distributions and the electron fraction, potentially assisting the stabilization of the resonance. |
| Material: |
