Abstract
One-graviton-loop corrections to the vacuum polarization on a de Sitter background show two interesting infrared effects: a secular enhancement of the photon electric field strength and a long-range running of the Coulomb potential. We show that the first effect derives solely from the "tail" term of the graviton propagator, but that the second effect does not. Our result agrees with the earlier observation that the secular enhancement of massless fermion mode functions derives solely from the tail term. We discuss the implications this has for the important project of generalizing to quantum gravity the Starobinsky technique for summing the series of leading infrared effects from inflationary quantum field theory.
| Original language | English |
|---|---|
| Article number | 025022 |
| Journal | Physical Review D |
| Volume | 98 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 15 Jul 2018 |
Funding
We are grateful for conversations and correspondence with Y. Z. Chu, N. C. Tsamis and C. L. Wang. This work was partially supported by Taiwan Ministry of Science and Technology (MOST) Grants No. 103-2112-M-006-001-MY3 and No. 106-2112-M-006-008-, by the D-ITP consortium, a program of the Netherlands Organization for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science (OCW), by National Science Foundation (NSF) Grants No. PHY-1506513 and No. PHY-1806218, and by the Institute for Fundamental Theory at the University of Florida. APPENDIX A:
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