Neutrino helicity flip from gravity-spin coupling

Details Neutrino helicity flip from gravity-spin coupling Neutrino helicity flip from gravity-spin coupling

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..66.1259c&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 66, March 11, 1991, p. 1259-1262. NSERC-supported research.

Astronomy and Astrophysics

Astrophysics

62

Gravitational Fields, Neutrinos, Neutron Stars, Spin-Spin Coupling, Stellar Rotation, Supernovae, Angular Momentum, Dirac Equation, Fermions, Maxwell Equation, Wave Equations

Scientific paper

It is suggested that the rotation-spin coupling predicted by Mashhoon (1988) may lead, in the case of neutrinos, to a helicity flip that has implications for astrophysical objects such as rotating neutron stars and supernovae. The coupling is generalized here to include gravitational fields and total angular momentum and is derived by solving the covariant Dirac and Maxwell-Proca equations exactly to first order in the metric deviation gamma(mu-nu). For fermions the spin part of the effect also applies to gravitational fields of arbitrary strength.

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