Cosmological fermion-number non-conservation

Details Cosmological fermion-number non-conservation Cosmological fermion-number non-conservation

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979phlb...84..431g&link_type=abstract

Physics Letters B, Volume 84, Issue 4, p. 431-434.

Physics

6

Scientific paper

It is shown that certain cosmological models have builts into the structure of space a ``handedness'' which favours neutrinos over antineutrinos. In such models neutrino pairs rather than neutrino-antineutrino pairs can be created from the vacuum thus violating the conservation of lepton number. I give both a real and an imaginary time description of the process. The former makes use of Bogoliubov transformations, the latter of axial current anomalies and the Atiyah-Patodi-Singer index theorem for manifolds with boundary.

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