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  • Letter
  • Open Access

Geometric optics in the presence of axionlike particles in curved spacetime

Dominik J. Schwarz1, Jishnu Goswami1, and Aritra Basu1,2

  • 1Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
  • 2Thüringer Landessternwarte, Sternwarte 5, 07778 Tautenburg, Germany

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Phys. Rev. D 103, L081306 – Published 27 April, 2021

DOI: https://doi.org/10.1103/PhysRevD.103.L081306

Abstract

We present a concise derivation of geometric optics in the presence of axionic fields in a curved spacetime. Whenever light can be described via geometric optics (the eikonal approximation), the only difference to the situation without axionic field is the phenomenon of achromatic birefringence. Consequently, redshift of light and distance estimates based on propagating light rays, as well as shear and magnification due to gravitational lensing are not affected by the interaction of light with an axionic field.

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Phys. Rev. D 103, L081306– Published 27 April, 2021
  • Received 31 March 2020
  • Accepted 5 April 2021
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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