CERN Accelerating science

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1.
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: 2204.05434 - PDF; jt - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
2.
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;
3.
Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics / Caldwell, Robert (Dartmouth Coll.) ; Cui, Yanou (UC, Riverside) ; Guo, Huai-Ke (U. Utah, Salt Lake City) ; Mandic, Vuk (Minnesota U.) ; Mariotti, Alberto (Brussels U., IIHE) ; No, Jose Miguel (Madrid, IFT) ; Ramsey-Musolf, Michael J. (Shanghai Jiao Tong U.) ; Sakellariadou, Mairi (King's Coll. London) ; Sinha, Kuver (U. Oklahoma, Norman) ; Wang, Lian-Tao (Chicago U.) et al.
Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific questions about the Universe. In this white paper, we survey the leading early-Universe mechanisms that may produce a detectable signal -- including inflation, phase transitions, topological defects, as well as primordial black holes -- and highlight the connections to fundamental physics. [...]
arXiv:2203.07972.- 2022-11-30 - 67 p. Fulltext: 2203.07972 - PDF; document - PDF; External link: eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.

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