2021/03/08 by Andrew G. Cohen, David B. Kaplan, Cohen, Andrew G. +1
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2103.04509
openalex publication_date 2021/03/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In a previous paper, the authors with Ann Nelson proposed that the UV and IR applicability of effective quantum field theories should be constrained by requiring that strong gravitational effects are nowhere encountered in a theory's domain of validity [Phys. Rev. Lett. 82, 4971 (1999)]. The constraint was proposed to delineate the boundary beyond which conventional quantum field theory, viewed as an effective theory excluding quantum gravitational effects, might be expected to break down. In this Letter we revisit this idea and show that quantum gravitational effects could lead to a deviation of size (α/2π)√(me/Mp) from the Standard Model calculation for the electron magnetic moment. This is the same size as QED and hadronic uncertainties in the theory of ae, and a little more than one order of magnitude smaller than both the dominant uncertainty in its Standard Model value arising from the accuracy with which α is measured, as well as the experimental uncertainty in measurement of ae.