21-26 July 2014
Renold Building
Europe/London timezone
Home > Timetable > Session details > Contribution details
PDF | XML | iCal

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

Presented by Prof. ALYSSON FABIO FERRARI on 21 Jul 2014 from 15:10 to 15:30
Type: Alternative Theories
Track: Alternative Theories


Axionlike particles (ALPs) are weakly interacting light pseudoscalars, much studied due to their potential relevance to the fields of particle physics, astrophysics and cosmology: axions are a specific example, involved in the solution of certain specific problems in QCD. It is noteworthy that ALPs are also viable dark matter candidates, which is one of the main physical motivations for their theoretical and experimental study. The most relevant coupling of ALPs from the viewpoint of current experimental searches is to the photon, which can be directly measured by light-shinning through walls experiments, for example. In this work, we propose the generation of the ALP-photon interaction vertex as an effect of quantum corrections, originated from an underlying Lorentz-violating background. Most interestingly, we show that the dominant interactions 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.


Location: Renold
Room: F1

Primary authors