scholarly journals CAN LIGHTCONE FLUCTUATIONS BE PROBED WITH COSMOLOGICAL BACKGROUNDS?

2005 ◽  
Vol 20 (07) ◽  
pp. 499-507 ◽  
Author(s):  
DAVID POLARSKI ◽  
PHILIPPE ROCHE
Keyword(s):  
Quantum Gravity ◽  
Gravitational Wave ◽  
Recent Work ◽  
Light Cone ◽  
Cosmological Observations ◽  
Experimental Side ◽  
Gravitational Wave Background

Finding signatures of quantum gravity in cosmological observations is now actively pursued both from the theoretical and the experimental side. Recent work has concentrated on finding signatures of light-cone fluctuations in the CMB. Because in inflationary scenarios a Gravitational Wave Background (GWB) is always emitted much before the CMB, we can ask, in the hypothesis where this GWB could be observed, what is the imprint of light cone fluctuations on this GWB. We show that due to the flat nature of the GWB spectrum, the effect of lightcone fluctuations are negligible.

scholarly journals The Stochastic Gravitational Wave Background Generated by Cosmic String Networks

2014 ◽  
Vol 10 (S306) ◽  
pp. 391-393
Author(s):  
L. Sousa ◽  
P. P. Avelino
Keyword(s):  
Gravitational Wave ◽  
Gravitational Waves ◽  
Recent Work ◽  
Cosmic String ◽  
Cosmological Evolution ◽  
Analytical Tools ◽  
String Networks ◽  
Gravitational Wave Background

AbstractCosmic string interactions often result in the formation of cosmic string loops that detach from the long string network and radiate their energy in the form of gravitational waves. Loop production occurs copiously throughout the cosmological evolution of a cosmic string network and the superimposition of their emissions gives rise to a stochastic gravitational In this essay, we briefly review our recent work on the stochastic gravitational wave background generated by cosmic string networks and introduce a set of numerical and analytical tools for the computation of this background.

scholarly journals Insights into searches for anisotropies in the nanohertz gravitational-wave background

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Yacine Ali-Haïmoud ◽  
Tristan L. Smith ◽  
Chiara M. F. Mingarelli
Keyword(s):  
Gravitational Wave ◽  
Gravitational Wave Background

scholarly journals Stochastic gravitational wave background from exoplanets

2015 ◽  
Vol 91 (12) ◽  
Author(s):  
Anirban Ain ◽  
Shilpa Kastha ◽  
Sanjit Mitra
Keyword(s):  
Gravitational Wave ◽  
Gravitational Wave Background

scholarly journals Cherenkov radiation in a gravitational-wave background

2001 ◽  
Vol 18 (11) ◽  
pp. 2217-2232 ◽  
Author(s):  
Alexander B Balakin ◽  
Richard Kerner ◽  
José P S Lemos
Keyword(s):  
Gravitational Wave ◽  
Cherenkov Radiation ◽  
Gravitational Wave Background
Sign in / Sign up

Export Citation Format

Share Document