Integral representation of the Feynman propagators of the Dirac fermions on the de Sitter expanding universe

Abstract

The propagators of the Dirac fermions on the expanding portion of the (1+3)-dimensional de Sitter spacetime are considered as mode sums in momentum representation with a fixed vacuum of Bunch-Davies type. The principal result reported here is a new integral representation of the Feynman propagators of the massive and left-handed massless Dirac fields which can be used for deriving the Feynman rules of the de Sitter QED in Coulomb gauge or of an extended QFT.

5 pages, 1 figure. arXiv admin note: text overlap with arXiv:1804.02842

References in corpus (1)

• New Dirac quantum modes in moving frames of the de Sitter spacetime

Cited by in corpus (7)

• Tensors and Spinors in de Sitter Space
• Rest frame vacuum of the Dirac field on spatially flat FLRW spacetimes
• First order QED effects on a spatially flat FLRW spacetime with a Milne-type scale factor
• New conformal-like symmetry of strictly massless fermions in four-dimensional de Sitter space
• Propagators of the Dirac fermions on spatially flat FLRW spacetimes
• A perturbative production of massive Z bosons and fermion-antifermion pairs from the vacuum in the de Sitter Universe
• Integral representation of the scalar propagators on the de Sitter expanding universe