Generation of axionlike couplings via quantum corrections in a Lorentz-violating background

Author(s)

Borges, L. H. C. ; Dias, A. G. ; Ferrari, A. F. ; Nascimento, J. R. ; Petrov, A. Yu.

• Document type: Journal article
• Source: PHYSICAL REVIEW D; v. 89, n. 4, p. 7-pg., 2014-02-12.

Abstract

Light pseudoscalars, or axionlike particles (ALPs), are much studied due to their potential relevance to the fields of particle physics, astrophysics, and cosmology. The most relevant coupling of ALPs from the viewpoint of current experimental searches is to the photon: in this work, we study the generation of this coupling as an effect of quantum corrections, which originated from an underlying Lorentz-violating background. Most interestingly, we show that the interaction so generated turns out to be Lorentz invariant, thus mimicking the standard ALP coupling to the photon that is considered in the experiments. This consideration implies that violations of spacetime symmetries, much studied as possible consequences of physics in very high energy scales, might infiltrate in other realms of physics in unsuspecting ways. Additionally, we conjecture that a similar mechanism can also generate Lorentz invariant couplings involving scalar particles and photons, playing a possible role in the phenomenology of Higgs bosons. (AU)

• FAPESP's process: 13/01231-6 - Lorentz symmetry breaking, supersymmetry and pseudo-escalars
• Grantee: Luiz Henrique de Campos Borges
• Support Opportunities: Scholarships in Brazil - Doctorate