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arXiv · 1809.00670

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

Ion I. Cotaescu
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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.

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Ion I. Cotaescu. 2018-09-19. Integral representation of the Feynman propagators of the Dirac fermions on the de Sitter expanding universe. https://doi.org/10.1140/epjc%2Fs10052-018-6258-2

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