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CERN Document Server 7 záznamov nájdených  Hľadanie trvalo 0.69 sekúnd. 
1.
Primordial gravitational wave backgrounds from phase transitions with next generation ground based detectors / Caprini, Chiara (Geneva U., Dept. Theor. Phys. ; CERN) ; Pujolàs, Oriol (Barcelona, IFAE) ; Quelquejay-Leclere, Hippolyte (APC, Paris) ; Rompineve, Fabrizio (Barcelona, IFAE ; Barcelona, Autonoma U.) ; Steer, Danièle A. (CERN ; APC, Paris ; LPENS, Paris)
Third generation ground-based gravitational wave (GW) detectors, such as Einstein Telescope and Cosmic Explorer, will operate in the $(\text{few}-10^4)$ Hz frequency band, with a boost in sensitivity providing an unprecedented reach into primordial cosmology. [...]
arXiv:2406.02359. - 53.
Fulltext
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2.
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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3.
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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4.
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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5.
Dirac Born Infeld (DBI) Cosmic Strings / Babichev, Eugeny (APC, Paris ; Paris Observ.) ; Brax, Philippe (Saclay, SPhT ; Paris, Inst. Astrophys.) ; Caprini, Chiara (Saclay, SPhT) ; Martin, Jerome (Paris, Inst. Astrophys.) ; Steer, Daniele A. (Paris, Inst. Astrophys.)
Motivated by brane physics, we consider the non-linear Dirac-Born-Infeld (DBI) extension of the Abelian-Higgs model and study the corresponding cosmic string configurations. The model is defined by a potential term, assumed to be of the mexican hat form, and a DBI action for the kinetic terms. [...]
arXiv:0809.2013; CERN-PH-TH-2008-099; CERN-PH-TH-2008-099.- Geneva : CERN, 2009 - 25 p. - Published in : JHEP 03 (2009) 091 Fulltext: arXiv:0809.2013 - PDF; JHEP03(2009)091 - PDF; SISSA/IOP Open Access article: PDF; External link: Preprint
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6.
Primordial perturbations and non-Gaussianities in DBI and general multi-field inflation / Langlois, David (APC, Paris ; Paris, Inst. Astrophys.) ; Renaux-Petel, Sebastien (APC, Paris) ; Steer, Daniele A (APC, Paris ; CERN) ; Tanaka, Takahiro (Kyoto U., Yukawa Inst., Kyoto)
We study cosmological perturbations in general inflation models with multiple scalar fields and arbitrary kinetic terms, with special emphasis on the multi-field extension of Dirac-Born-Infeld (DBI) inflation. We compute the second-order action governing the dynamics of linear perturbations in the most general case. [...]
arXiv:0806.0336; CERN-PH-TH-2008-098.- Geneva : CERN, 2008 - 20 p. - Published in : Phys. Rev. D 78 (2008) 063523 APS Published version, local copy: PDF; External link: Fulltext
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7.
Primordial Fluctuations and Non-Gaussianities in Multifield Dirac-Born-Infeld Inflation / Langlois, David (APC, Paris) ; Renaux-Petel, Sebastien (APC, Paris) ; Steer, Daniele A (APC, Paris ; CERN) ; Tanaka, Takahiro (Kyoto U., Yukawa Inst., Kyoto)
We study Dirac-Born-Infeld (DBI) inflation models with multiple scalar fields. We show that the adiabatic and entropy modes propagate with a common effective sound speed and are thus amplified at the sound horizon crossing. [...]
arXiv:0804.3139; CERN-PH-TH-2008-077.- 2008 - 4 p. - Published in : Phys. Rev. Lett. 101 (2008) 061301 APS Published version, local copy: PDF; External link: Fulltext
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