PlumX Metrics
Embed PlumX Metrics

Fermionic α-vacua

Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN: 1550-2368, Vol: 71, Issue: 2
2005
  • 16
    Citations
  • 0
    Usage
  • 0
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    16
    • Citation Indexes
      16

Article Description

A spin 1/2 particle propagating in a de Sitter background has a one parameter family of states which transform covariantly under the isometry group of the background. These states are the fermionic analogues of the α-vacua for a scalar field. We shall show how using a point-source propagator for a fermion in an α-state produces divergent perturbative corrections. These corrections cannot be used to cancel similar divergences arising from scalar fields in bosonic α-vacua since they have an incompatible dependence on the external momenta. The theory can be regularized by modifying the propagator to include an antipodal source. © 2005 The American Physical Society.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know