New parity-violating photon-axion interaction
Parthasarathi Majumdar
TL;DR
This paper introduces a new parity-violating interaction between photons and axions via a modified Maxwell-Kalb-Ramond coupling, potentially affecting astrophysical observations like synchrotron radiation.
Contribution
It proposes a novel parity-violating photon-axion interaction arising from a modified Maxwell-Kalb-Ramond coupling in Einstein-Cartan spacetimes.
Findings
Predicts modulation of synchrotron radiation intensity from distant galaxies
Demonstrates parity violation in photon-axion interactions
Suggests observable astrophysical consequences of the new coupling
Abstract
A variant of an earlier proposal by the author and SenGupta, to describe four dimensional Maxwell electrodynamics in Einstein-Cartan spacetimes through a Kalb-Ramond field as an intermediary, is shown to lead to a new Maxwell-Kalb-Ramond coupling that violates spatial parity, even when the KR gauge field has its standard parity assignment. One consequence of this coupling seems to be a modulation, independent of wavelength but dependent on the KR field strength, of the intensity of synchrotron radiation observed from distant galactic sources.
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