Electrodynamic effects of inflationary gravitons

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

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號175002
期刊Classical and Quantum Gravity
31
發行號17
DOIs
出版狀態Published - 2014 九月 7

All Science Journal Classification (ASJC) codes

  • 物理與天文學(雜項)

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