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On gravitational waves in spacetimes with a nonvanishing cosmological constant


Näf, J; Jetzer, P; Sereno, M (2009). On gravitational waves in spacetimes with a nonvanishing cosmological constant. Physical Review D, 79(2):024014 .

Abstract

We study the effect of a cosmological constant Λ on the propagation and detection of gravitational waves. To this purpose we investigate the linearized Einstein’s equations with terms up to linear order in Λ in a de Sitter and an anti-de Sitter background spacetime. In this framework the cosmological term does not induce changes in the polarization states of the waves, whereas the amplitude gets modified with terms depending on Λ. Moreover, if a source emits a periodic waveform, its periodicity as measured by a distant observer gets modified. These effects are, however, extremely tiny and thus well below the detectability by some 20 orders of magnitude within present gravitational wave detectors such as LIGO or future planned ones such as LISA.

We study the effect of a cosmological constant Λ on the propagation and detection of gravitational waves. To this purpose we investigate the linearized Einstein’s equations with terms up to linear order in Λ in a de Sitter and an anti-de Sitter background spacetime. In this framework the cosmological term does not induce changes in the polarization states of the waves, whereas the amplitude gets modified with terms depending on Λ. Moreover, if a source emits a periodic waveform, its periodicity as measured by a distant observer gets modified. These effects are, however, extremely tiny and thus well below the detectability by some 20 orders of magnitude within present gravitational wave detectors such as LIGO or future planned ones such as LISA.

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9 citations in Web of Science®
6 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:January 2009
Deposited On:27 Feb 2010 12:32
Last Modified:05 Apr 2016 13:56
Publisher:American Physical Society
ISSN:1550-2368
Funders:Swiss National Science Foundation, Tomalla Foundation
Publisher DOI:https://doi.org/10.1103/PhysRevD.79.024014
Related URLs:http://arxiv.org/abs/0810.5426
Permanent URL: https://doi.org/10.5167/uzh-30891

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