Disentangling mass and angle dependence in neutrino mixing

[摘要] We show that it is possible to decompose the generator of mixing transformations for Dirac fields, in terms of a rotation and two ordinary Bogoliubov transformations, accounting for mass shift in the fermion fields. This result clarifies the nature of the mechanism which leads to the unitary inequivalence of the flavor and mass vacua.

[发布机构] Dipartimento di Fisica E.R.Caianiello, Università Degli Studi di Salerno, Via Ponte don Melillo, Fisciano (SA); I-84084, Italy^1;INFN Sezione di Napoli, Gruppo Collegato di Salerno, Italy^2;Department of Physics, King's College, University of London, Strand, London; WC2R 2LS, United Kingdom^3

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Angle dependence;Bogoliubov;Dirac field;Fermion fields;Mass shift;Neutrino mixing