The graviton tail almost completely wags the dog
arXiv preprint arXiv:1806.00742, 2018•arxiv.org
One graviton loop corrections to the vacuum polarization on de Sitter 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 from solely from the tail term. We discuss the implications this has for the important …
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 from solely from the tail term. We discuss the implications this has for the important …
One graviton loop corrections to the vacuum polarization on de Sitter 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 from 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.
arxiv.org
