Neutrino—antineutrino asymmetry around rotating black holes |
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Authors: | Banibrata Mukhopadhyay Parampreet Singh |
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Institution: | (1) Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, Post Bag 4, 411 007 Pune, India |
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Abstract: | Propagation of fermion in curved space-time generates gravitational interaction due to the coupling between spin of the fermion
and space-time curvature. This gravitational interaction appears as a CPT violating term in the Lagrangian. It is seen that
this space-time interaction can generate neutrino asymmetry in the Universe. If the background metric is spherically asymmetric,
say, of a rotating black hole, this interaction is non-zero, thus the net difference to the number density of the neutrino
and anti-neutrino is non-zero. |
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Keywords: | Neutrino asymmetry rotating black hole CPT violation |
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