Rest frame vacuum of the Dirac field on spatially flat FLRW spacetimes

Abstract

In quantum theory of the free Dirac field on spatially flat FLRW spacetimes we introduce a new type of vacuum able to separate the positive and negative frequencies in the rest frames. This is refereed as the rest frame vacuum shoving that this differs from the adiabatic vacuum apart from the Minkowski spacetime where these two vacua coincide.

5 pages, no figures

References in corpus (3)

• New Dirac quantum modes in moving frames of the de Sitter spacetime
• Integral representation of the Feynman propagators of the Dirac fermions on the de Sitter expanding universe
• Propagators of the Dirac fermions on spatially flat FLRW spacetimes

Cited by in corpus (5)

• First order QED effects on a spatially flat FLRW spacetime with a Milne-type scale factor
• Time evolution of the free Dirac field in spatially flat FLRW space-times
• Flat limit of the de Sitter QFT in the rest frame vacuum
• Rest frame vacua of massive Klein-Gordon fields on spatially flat FLRW spacetimes
• Quantum theory of redshift in de Sitter expanding universe