Spin optics for gravitational waves

Pravin Kumar Dahal

doi:10.3390/astronomy1030016

Spin optics for gravitational waves

Pravin Kumar Dahal

School of Mathematical and Physical Sciences

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

182 Downloads (Pure)

Abstract

We present the geometric optics expansion for circularly polarized gravitational waves on a curved spacetime background, to subleading order. We call spin optics to the subleading order geometric optics expansion, which involves modifying the standard eikonal function by including a specially chosen helicity-dependent correction. We show that the techniques developed for the propagation of electromagnetic waves can also be applied to gravitational waves in the limit of spin optics. However, one needs to account for the difference in the photon and graviton helicity, which we do here.

Original language	English
Pages (from-to)	271-287
Number of pages	17
Journal	Astronomy
Volume	1
Issue number	3
DOIs	https://doi.org/10.3390/astronomy1030016
Publication status	Published - 5 Dec 2022

Bibliographical note

© 2022 by the author. Licensee MDPI, Basel, Switzerland. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

geometric optics
spin hall effect
gravitational faraday rotation
spin optics

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10.3390/astronomy1030016Licence: CC BY

Publisher version (open access)Final published version, 325 KBLicence: CC BY

Cite this

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PY - 2022/12/5

Y1 - 2022/12/5

N2 - We present the geometric optics expansion for circularly polarized gravitational waves on a curved spacetime background, to subleading order. We call spin optics to the subleading order geometric optics expansion, which involves modifying the standard eikonal function by including a specially chosen helicity-dependent correction. We show that the techniques developed for the propagation of electromagnetic waves can also be applied to gravitational waves in the limit of spin optics. However, one needs to account for the difference in the photon and graviton helicity, which we do here.

AB - We present the geometric optics expansion for circularly polarized gravitational waves on a curved spacetime background, to subleading order. We call spin optics to the subleading order geometric optics expansion, which involves modifying the standard eikonal function by including a specially chosen helicity-dependent correction. We show that the techniques developed for the propagation of electromagnetic waves can also be applied to gravitational waves in the limit of spin optics. However, one needs to account for the difference in the photon and graviton helicity, which we do here.

KW - geometric optics

KW - spin hall effect

KW - gravitational faraday rotation

KW - spin optics

UR - https://www.scopus.com/pages/publications/85145877402

U2 - 10.3390/astronomy1030016

DO - 10.3390/astronomy1030016

M3 - Article

SN - 2674-0346

VL - 1

SP - 271

EP - 287

JO - Astronomy

JF - Astronomy

IS - 3

ER -

Spin optics for gravitational waves

Abstract

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Keywords

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