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Two loop stress-energy tensor for inflationary scalar electrodynamics

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arxiv 0802.3673 v1 pith:PPNMNC36 submitted 2008-02-25 gr-qc astro-phhep-th

Two loop stress-energy tensor for inflationary scalar electrodynamics

Tomislav Prokopec (Utrecht University) , Nicholas C. Tsamis (Univ. of Crete) , Richard P. Woodard (Univ. of Florida) This is my paper
classification gr-qc astro-phhep-th
keywords scalarelectrodynamicsinflationaryloopresultstress-energytensorvacuum
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We calculate the expectation value of the coincident product of two field strength tensors at two loop order in scalar electrodynamics on de Sitter background. The result agrees with the stochastic formulation which we have developed in a companion paper [2] for the nonperturbative resummation of leading logarithms of the scale factor. When combined with a previous computation of scalar bilinears [1], our current result also gives the two loop stress-energy tensor for inflationary scalar electrodynamics. This shows a secular decrease in the vacuum energy which derives from the vacuum polarization induced by the inflationary production of charged scalars.

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  1. Deviations from Gaussian White Noise in Stochastic Inflation

    gr-qc 2025-12 conditional novelty 6.0

    Relaxing the sharp cutoff or the Bunch-Davies initial state in stochastic inflation makes the noise colored, and relaxing the initial state also makes it non-Gaussian.