scholarly journals Metric perturbation approach to gravitational waves in isotropic cosmologies

2004 ◽  
Vol 69 (6) ◽  
Author(s):  
E. M. O’Shea
Keyword(s):  
Gravitational Waves ◽  
Perturbation Approach ◽  
Metric Perturbation

scholarly journals Gravitational waves in modified Gauss–Bonnet gravity

2020 ◽  
Vol 29 (10) ◽  
pp. 2050072
Author(s):  
Tomohiro Inagaki ◽  
Masahiko Taniguchi
Keyword(s):  
General Relativity ◽  
Gravitational Waves ◽  
Wave Equations ◽  
Massive Scalar ◽  
Speed Of Light ◽  
Bonnet Gravity ◽  
Cosmological Background ◽  
Background Curvature ◽  
Scalar Mode ◽  
Metric Perturbation

We study the gravitational waves (GWs) in modified Gauss–Bonnet gravity. Applying the metric perturbation around a cosmological background, we obtain explicit expressions for the wave equations. It is shown that the speed of the traceless mode is equal to the speed of light. An additional massive scalar mode appears in the propagation of the GWs. To find phenomena beyond the general relativity, the scalar mode mass is calculated as a function of the background curvature in some typical models.

The Search for Gravitational Waves

2008 ◽  
Vol 30 ◽  
pp. 15-25
Author(s):  
A.M. Sintes
Keyword(s):  
Gravitational Waves

On the direct detection of gravitational waves

2016 ◽  
Vol 186 (10) ◽  
pp. 1133-1152 ◽  
Author(s):  
V.I. Pustovoit
Keyword(s):  
Gravitational Waves ◽  
Direct Detection
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