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Slow-roll inflation at N3LO (as deviations from a purely de Sitter background) / Auclair, Pierre (speaker) (UCLouvain)
In the context of slow-roll inflation, deviations from a purely de Sitter background are expected and are both separate and complementary to the loop corrections in various inflationary scenarios. In this talk, I propose to go over some of the most up-to-date computations of the inflationary scalar and tensor slow-roll power spectra at next-to-next-to-next to leading order (N3LO), fully expanded around an observable pivot wavenumber, for all single field inflationary models having minimal and non-minimal kinetic terms. [...]
2024 - 1183. TH institutes; Looping in the Primordial Universe External links: Talk details; Event details In : Looping in the Primordial Universe
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LISA Definition Study Report / Colpi, Monica (INFN, Milan Bicocca) ; Danzmann, Karsten (Hannover, Max Planck Inst. Grav.) ; Hewitson, Martin (Hannover, Max Planck Inst. Grav.) ; Jetzer, Philippe (U. Zurich (main)) ; Nelemans, Gijs (Nijmegen U., IMAPP) ; Petiteau, Antoine (IRFU, Saclay) ; Shoemaker, David (MIT, MKI) ; Sopuerta, Carlos (ICE, Bellaterra) ; Stebbins, Robin (Colorado U.) ; Tanvir, Nial (Leicester U.) et al.
The Laser Interferometer Space Antenna (LISA) is the first scientific endeavour to detect and study gravitational waves from space. [...]
arXiv:2402.07571.
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Cosmology with the Laser Interferometer Space Antenna / LISA Cosmology Working Group Collaboration
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and particle physics, from the MeV to the Planck scale. However, the range of potential cosmological applications of gravitational wave observations extends well beyond these two objectives. [...]
arXiv:2204.05434; LISA CosWG-22-03; FERMILAB-PUB-22-349-SCD.- 2023-08-28 - 176 p. - Published in : Living Rev. Relativ. 26 (2023) 5 Fulltext: jt - PDF; 2204.05434 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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Gravitational Waves from Current-Carrying Cosmic Strings / Auclair, Pierre (Louvain U.) ; Blasi, Simone (Brussels U., IIHE) ; Brdar, Vedran (Fermilab ; Northwestern U.) ; Schmitz, Kai (Munster U. ; CERN)
Cosmic strings are predicted by many Standard Model extensions involving the cosmological breaking of a symmetry with nontrivial first homotopy group and represent a potential source of primordial gravitational waves (GWs). Present efforts to model the GW signal from cosmic strings are often based on minimal models, such as, eg, the Nambu--Goto action that describes cosmic strings as exactly one-dimensional objects without any internal structure. [...]
arXiv:2207.03510; CERN-TH-2022-116; FERMILAB-PUB-22-508-T; MS-TP-22-19; NUHEP-TH/22-07.- 2023-04-06 - 18 p.
Fulltext: cc28b880ac69c9914b4a7e9aae90d223 - PDF; 8c77a9393d0368d47c859c318a42d4ce - PDF; 2207.03510 - PDF; FERMILAB-PUB-22-508-T - PDF; External link: Fermilab Accepted Manuscript
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Generation of gravitational waves from freely decaying turbulence / Auclair, Pierre (Louvain U., CP3 ; Louvain U.) ; Caprini, Chiara (Geneva U. ; CERN) ; Cutting, Daniel (Helsinki Inst. of Phys. ; Helsinki U.) ; Hindmarsh, Mark (Helsinki Inst. of Phys. ; Helsinki U. ; Sussex U.) ; Rummukainen, Kari (Helsinki Inst. of Phys. ; Helsinki U.) ; Steer, Danièle A. (APC, Paris) ; Weir, David J. (Helsinki Inst. of Phys. ; Helsinki U.)
We study the stochastic gravitational wave background (SGWB) produced by freely decaying vortical turbulence in the early Universe. We thoroughly investigate the time correlation of the velocity field, and hence of the anisotropic stresses producing the gravitational waves. [...]
arXiv:2205.02588; HIP-2021-35/TH.- 2022-09-09 - 54 p. - Published in : JCAP 09 (2022) 029 Fulltext: PDF;

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