Electrodynamic effects of inflationary gravitons

D. Glavan, T. Prokopec, S. P. Miao, R. P. Woodard

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We calculate the one-loop corrections from inflationary gravitons to the electromagnetic fields of a point charge and a point magnetic dipole on a locally de Sitter space background. Results are obtained both for an observer at rest in co-moving coordinates, whose physical distance from the sources increases with the expanding universe, and for an observer at rest in static coordinates, whose physical distance from the sources is constant. The fields of both sources show the de Sitter analogs of the fractional corrections which occur in flat space, but there are also some fractional GH2 corrections due to the scattering of virtual photons from the vast ensemble of infrared gravitons produced by inflation. The co-moving observer perceives the magnitude of the point charge to increase linearly with co-moving time and logarithmically with the co-moving position, however, the magnetic dipole shows only a negative logarithmic spatial variation. The static observer perceives no secular change of the point charge but he does report a secular enhancement of the magnetic dipole moment.

Original languageEnglish
Article number175002
JournalClassical and Quantum Gravity
Volume31
Issue number17
DOIs
Publication statusPublished - 2014 Sep 7

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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