Mirage of Luminal Modified Gravitational-Wave Propagation

Antonio Enea Romano; Mairi Sakellariadou

doi:10.1103/PhysRevLett.130.231401

Mirage of Luminal Modified Gravitational-Wave Propagation

Antonio Enea Romano, Mairi Sakellariadou

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

7 Citations (Scopus)

Abstract

Using conformal invariance of gravitational waves, we show that for a luminal modified gravity theory, the gravitational-wave propagation and luminosity distance are the same as in general relativity. The relation between the gravitational-wave and electromagnetic-wave luminosity distance gets modified, however, for electromagnetism minimally coupled to the Jordan frame metric. Using effective field theory we show that the modified relation obtained for luminal theories is also valid for nonluminal theories with Jordan frame matter-gravity coupling. We generalize our analysis to a time-dependent speed of gravitational waves with matter minimally coupled to either the Jordan or Einstein frame metrics.

Original language	English
Article number	231401
Journal	Physical Review Letters
Volume	130
Issue number	23
Early online date	8 Jun 2023
DOIs	https://doi.org/10.1103/PhysRevLett.130.231401
Publication status	E-pub ahead of print - 8 Jun 2023

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10.1103/PhysRevLett.130.231401Licence: CC BY

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title = "Mirage of Luminal Modified Gravitational-Wave Propagation",

abstract = "Using conformal invariance of gravitational waves, we show that for a luminal modified gravity theory, the gravitational-wave propagation and luminosity distance are the same as in general relativity. The relation between the gravitational-wave and electromagnetic-wave luminosity distance gets modified, however, for electromagnetism minimally coupled to the Jordan frame metric. Using effective field theory we show that the modified relation obtained for luminal theories is also valid for nonluminal theories with Jordan frame matter-gravity coupling. We generalize our analysis to a time-dependent speed of gravitational waves with matter minimally coupled to either the Jordan or Einstein frame metrics.",

author = "Romano, {Antonio Enea} and Mairi Sakellariadou",

note = "Funding Information: We thank Tessa Baker, Timothy Clifton, Charles Dalang, Martin Kunz, Lucas Lombriser, Claudia de Rham, Isabela Santiago de Matos, Michele Maggiore, Juan Maldacena, and Sergio Vallejo and Jorge Nore{\~n}a for discussions. A. E. R. was supported by the UDEA Dedicacion exclusiva and Sostenibilidad programs and the CODI projects 2019-28270 and 2021-44670 of UDEA. Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}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.",

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doi = "10.1103/PhysRevLett.130.231401",

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AU - Sakellariadou, Mairi

N1 - Funding Information: We thank Tessa Baker, Timothy Clifton, Charles Dalang, Martin Kunz, Lucas Lombriser, Claudia de Rham, Isabela Santiago de Matos, Michele Maggiore, Juan Maldacena, and Sergio Vallejo and Jorge Noreña for discussions. A. E. R. was supported by the UDEA Dedicacion exclusiva and Sostenibilidad programs and the CODI projects 2019-28270 and 2021-44670 of UDEA. Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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.

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N2 - Using conformal invariance of gravitational waves, we show that for a luminal modified gravity theory, the gravitational-wave propagation and luminosity distance are the same as in general relativity. The relation between the gravitational-wave and electromagnetic-wave luminosity distance gets modified, however, for electromagnetism minimally coupled to the Jordan frame metric. Using effective field theory we show that the modified relation obtained for luminal theories is also valid for nonluminal theories with Jordan frame matter-gravity coupling. We generalize our analysis to a time-dependent speed of gravitational waves with matter minimally coupled to either the Jordan or Einstein frame metrics.

AB - Using conformal invariance of gravitational waves, we show that for a luminal modified gravity theory, the gravitational-wave propagation and luminosity distance are the same as in general relativity. The relation between the gravitational-wave and electromagnetic-wave luminosity distance gets modified, however, for electromagnetism minimally coupled to the Jordan frame metric. Using effective field theory we show that the modified relation obtained for luminal theories is also valid for nonluminal theories with Jordan frame matter-gravity coupling. We generalize our analysis to a time-dependent speed of gravitational waves with matter minimally coupled to either the Jordan or Einstein frame metrics.

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Mirage of Luminal Modified Gravitational-Wave Propagation

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