Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Barrau, Aurélien"'
The issue of consistency is crucial in quantum gravity. It has recently been intensively addressed for effective symmetry-reduced models. In this article, we exhaustively study the anomaly freedom of effective loop quantum cosmology with generalized
Externí odkaz:
http://arxiv.org/abs/2409.06441
Publikováno v:
Class. Quant. Grav. 41 (2024) 225006
We review the kinematic effects on a gravitational wave due to either a peculiar motion of the astrophysical source emitting it or a local motion of the observer. Working in the context of general relativity, we show at fully non-linear order in velo
Externí odkaz:
http://arxiv.org/abs/2405.01297
In this brief note, we pursue the systematic investigation of possible gravitational wave sources in the gigahertz band. We focus on hyperbolic encounters of light black holes and evaluate precisely the expected signal when accounting for the detaile
Externí odkaz:
http://arxiv.org/abs/2404.08379
We examine the main properties of gravitational waves (GWs) emitted by transient hyperbolic encounters of black holes. We begin by building the set of basic variables most relevant to setting our problem. After exposing the ranges of masses and eccen
Externí odkaz:
http://arxiv.org/abs/2402.10706
Autor:
Atonga, Eduard, Martineau, Killian, Aboushelbaya, Ramy, Barrau, Aurélien, von der Leyen, Marko, Howard, Sunny, James, Abigail, Lee, Jordan, Lin, Chunshan, Martin, Heath, Ouatu, Iustin, Paddock, Robert, Ruskov, Rusko, Timmis, Robin, Norreys, Peter
Recent advances in high-energy and high-peak-power laser systems have opened up new possibilities for fundamental physics research. In this work, the potential of twisted light for the generation of gravitational waves in the high frequency regime is
Externí odkaz:
http://arxiv.org/abs/2309.04191
This note aims at investigating two different situations where the classical general relativistic dynamics competes with the evolution driven by Hawking evaporation. We focus, in particular, on binary systems of black holes emitting gravitational wav
Externí odkaz:
http://arxiv.org/abs/2308.15117
This work provides, at lower order, general analytical solutions for the orbital separation, merging time, and orbital frequency of binary systems emitting gravitational waves while being submitted to mass variations. Specific features, depending on
Externí odkaz:
http://arxiv.org/abs/2306.09069
Group field theory has shown to be a promising framework to derive cosmological predictions from full quantum gravity. In this brief note, we revisit the background dynamics when interaction terms are taken into account and conclude that, although th
Externí odkaz:
http://arxiv.org/abs/2305.05438
This article aims at clarifying the situation about astrophysical sources that might be observed with haloscope experiments sensitive to gravitational waves in the 1-10 GHz band. The GrAHal setup is taken as a benchmark. We follow a very pedagogical
Externí odkaz:
http://arxiv.org/abs/2303.06006
The propagation of perturbations is studied with generalized holonomy corrections in a fully consistent way, ensuring that the deformed algebra of constraints remains closed. The primordial cosmological power spectra are calculated. It is shown that,
Externí odkaz:
http://arxiv.org/abs/2212.01182