Volume 46, Number 6, June II 1999
|Page(s)||710 - 715|
|Section||The physics of elementary particles and fields|
|Published online||01 September 2002|
Fermion helicity flip induced by torsion field
Dipartimento di Scienze Fisiche "E. R. Caianiello”,
Università di Salerno I-84081 Baronissi, Salerno, Italy
2 Istituto Nazionale di Fisica Nucleare, Sezione di Napoli - Napoli, Italy
3 Dipartimento di Scienze Fisiche, Università di Napoli - Napoli, Italy
Accepted: 16 April 1999
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.
PACS: 14.60.Pq – Neutrino mass and mixing / 95.30.Sf – Relativity and gravitation / 04.50.+h – Gravity in more than four dimensions, Kaluza-Klein theory, unified field theories; alternative theories of gravity
© EDP Sciences, 1999
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