Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-30891
Näf, J; Jetzer, P; Sereno, M (2009). On gravitational waves in spacetimes with a nonvanishing cosmological constant. Physical Review D, 79(2):024014 .
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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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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute for Computational Science|
|Deposited On:||27 Feb 2010 12:32|
|Last Modified:||27 Nov 2013 18:20|
|Publisher:||American Physical Society|
|Funders:||Swiss National Science Foundation, Tomalla Foundation|
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