Neutrino-Antineutrino Asymmetry around Rotating Black Holes
General Relativity and Quantum Cosmology, abstract
gr-qc/0303053
From: Banibrata Mukhopadhyay <bm@iucaa.ernet.in>
Date: Wed, 12 Mar 2003 19:08:04 GMT (28kb)
Neutrino-Antineutrino Asymmetry around Rotating Black Holes
Author:
Banibrata Mukhopadhyay,
Parampreet Singh
Comments: 3 pages, pramana style; to appear in a special issue of Pramana — J.
Phys., as proceedings of IXth Particle-String-Cosmology (PASCOS), January
3-8, 2003, TIFR, Mumbai, India
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, which is an axial-vector appears as
CPT violating term in the Lagrangian. It is seen that this space-time
interaction can generate neutrino asymmetry in Universe. If the back-ground
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 nonzero.
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References and citations for this submission:
SLAC-SPIRES HEP (refers to ,
cited by, arXiv reformatted)