Fermion Helicity Flip Induced by Torsion Field

Birrel N. D.; C Stornaiolo; Capozziello S.; Choudhury D.; De Sabbata V.; De Sabbata V.; Figueiredo B. D. B.; G Iovane; G Lambiase; German G.; Goenner H.; Green M. B.; Hammond R.; Hammond R.; Hammond R. T.; Howe P. S.; Itzykson C.; Letelier P. S.; Oh C. H.; Patricio S.; S Capozziello

research

Fermion Helicity Flip Induced by Torsion Field

Authors: Birrel N. D.
C Stornaiolo
Capozziello S.
Choudhury D.
De Sabbata V.
De Sabbata V.
Figueiredo B. D. B.
G Iovane
G Lambiase
German G.
Goenner H.
Green M. B.
Hammond R.
Hammond R.
Hammond R. T.
Howe P. S.
Itzykson C.
Letelier P. S.
Oh C. H.
Patricio S.
S Capozziello
Publication date: 1 January 1999
Publisher: 'IOP Publishing'
Doi

Abstract

We show that in theories of gravitation with torsion the helicity of fermion particles is not conserved and we calculate the probability of spin flip, which is related to the anti-symmetric part of affine connection. Some cosmological consequences are discussed.Comment: 6 pages, to appear in Europhysics Letter