Remarks on cosmological gravitational waves
Sign Up to like & getrecommendations! Published in 2018 at "Annals of Physics"
DOI: 10.1016/j.aop.2018.05.003
Abstract: We study the propagation of a gravitational wave in an Ads spacetime. We find that, in presence of the cosmological constant, the graviton mass cannot be measured with higher precision than the square root of… read more here.
Keywords: remarks cosmological; cosmological gravitational; gravitational waves;
More On Cosmological Gravitational Waves And Their Memories
Sign Up to like & getrecommendations! Published in 2017 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aa8392
Abstract: We extend recent theoretical results on the propagation of linear gravitational waves (GWs), including their associated memories, in spatially flat Friedmann–Lemaitre–Robertson–Walker universes, for all spacetime dimensions higher than 3. By specializing to a cosmology driven… read more here.
Keywords: electromagnetism; gravitational waves; cosmology; waves memories ... See more keywords
On the gauge invariance of cosmological gravitational waves
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/03/014
Abstract: The issue of the gauge invariance of gravitational waves arises if they are produced in the early universe at second-order in perturbation theory. We address it by dividing the discussion about the gauge invariance in… read more here.
Keywords: gauge invariance; invariance cosmological; gravitational waves; cosmology ... See more keywords
New universal property of cosmological gravitational wave anisotropies
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.103502
Abstract: The anisotropies of the stochastic gravitational wave background, as produced in the early phases of cosmological evolution, can act as a key probe of the primordial universe particle content. We point out a new universal… read more here.
Keywords: new universal; cosmological gravitational; gravitational wave; wave anisotropies ... See more keywords