Virtual axion-like particle Complement to Euler-Heisenberg-Schwinger action

Evans, Stefan  (Department of Physics, The University of Arizona, Tucson, AZ 85721, USA) ; Rafelski, Johann  (Department of Physics, The University of Arizona, Tucson, AZ 85721, USA)

08 March 2019

Abstract: We modify action in an external electromagnetic field to include effects of virtual axion-like particle (ALP) excitations. A measurable addition to QED-Euler-Heisenberg-Schwinger (EHS) action is obtained and incorporated into experimental constraints placed on ALP mass and coupling to two photons. The regime of these constraints in which the ALP vacuum effect surpasses the EHS effect is characterized. We show that probing of the virtual vacuum effect offers an alternative method in search for physics related to ALPs.


Published in: Physics letters B 791 (2019) 331-334
Published by: Elsevier
DOI: 10.1016/j.physletb.2019.03.008
License: CC-BY-3.0



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