Fermionic α -vacua
作者： Hael Collins
DOI: 10.1103/PHYSREVD.71.024002
关键词: Quantum field theory in curved spacetime 、 Fermion 、 Physics 、 Scalar field 、 De Sitter universe 、 Quantum electrodynamics 、 Vacuum state 、 Mathematical physics 、 Propagator 、 Scalar (mathematics) 、 Renormalization
摘要: A spin one-half particle propagating in a de Sitter background has one parameter family of states which transform covariantly under the isometry group background. These are fermionic analogues alpha-vacua for scalar field. We shall show how using point-source propagator fermion an alpha-state produces divergent perturbative corrections. corrections cannot be used to cancel similar divergences arising from fields bosonic since they have incompatible dependence on external momenta. The theory can regularized by modifying include antipodal source.
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