2019/11/13 by Tom Banks, Patrick Draper · 1 citation
Physics and Astronomy · #hep-th #astro-ph.CO #hep-ph
paper · pdf · doi:10.1103/physrevd.101.126010
published as Phys. Rev. D 101, 126010 (2020) · 7 pages
arxiv created 2019/11/13 · arxiv updated 2020/07/01
Cohen, Kaplan, and Nelson (CKN) conjectured that the UV and IR cutoffs of effective quantum field theories coupled to gravity are not independent, but are connected by the physics of black holes. We interpret the CKN bound as a scale-dependent depletion of the QFT density of states and discuss various aspects of the bound on small and large scales. For laboratory experiments, we argue that the bound provides small corrections to ordinary quantum field theory, which we estimate to be of order me/Mp for g-2 of the electron. On large scales, we suggest a modification of the CKN bound due to the presence of cosmological horizons and discuss the connection with entropy bounds.