Stochastic Inflationary Scalar Electrodynamics

Details Stochastic Inflationary Scalar Electrodynamics Stochastic Inflationary Scalar Electrodynamics

2007-07-05

arxiv.org/abs/0707.0847v2

AnnalsPhys.323:1324-1360,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

52 pages, 7 figures, uses LaTeX 2epsilon, version 2 corrects eqn (138) and updates the reference list

Scientific paper

10.1016/j.aop.2007.08.008

We stochastically formulate the theory of scalar quantum electrodynamics on a de Sitter background. This reproduces the leading infrared logarithms at each loop order. It also allows one to sum the series of leading infrared logarithms to obtain explicit, nonperturbative results about the late time behavior of the system. One consequence is confirmation of the conjecture by Davis, Dimopoulos, Prokopec and Tornkvist that super-horizon photons acquire mass during inflation. We compute a photon mass-suqared of about 3.2991 H^2. The scalar stays perturbatively light with a mass-squared of about 0.8961 3 e^2 H^2/8pi^2. Interestingly, the induced change in the cosmological constant is negative, of about -0.6551 3 G H^4/pi.

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