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Gravitational waves from inflation in LISA: reconstruction pipeline and physics interpretation
/ LISA Cosmology Working Group Collaboration
Various scenarios of cosmic inflation enhance the amplitude of the stochastic gravitational wave background (SGWB) at frequencies detectable by the LISA detector. We develop tools for a template-based analysis of the SGWB and introduce a template databank to describe well-motivated signals from inflation, prototype their template-based searches, and forecast their reconstruction with LISA. [...]
arXiv:2407.04356; LISA-COSWG-24-03; CERN-TH-2024-072.-
2024-11-20 - 82 p.
- Published in : JCAP 2411 (2024) 032
Fulltext: PDF;
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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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155.
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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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Challenges and Opportunities of Gravitational Wave Searches at MHz to GHz Frequencies
/ Aggarwal, Nancy (Northwestern U.) ; Aguiar, Odylio D. (Sao Jose, INPE) ; Bauswein, Andreas (Darmstadt, GSI) ; Cella, Giancarlo (INFN, Pisa) ; Clesse, Sebastian (Brussels U.) ; Cruise, Adrian Michael (Birmingham U.) ; Domcke, Valerie (Geneva U., Dept. Theor. Phys. ; LPHE, Lausanne ; DESY) ; Figueroa, Daniel G. (Valencia U., IFIC) ; Geraci, Andrew (Northwestern U.) ; Goryachev, Maxim (Western Australia U.) et al.
The first direct measurement of gravitational waves by the LIGO and Virgo collaborations has opened up new avenues to explore our Universe. This white paper outlines the challenges and gains expected in gravitational wave searches at frequencies above the LIGO/Virgo band, with a particular focus on Ultra High-Frequency Gravitational Waves (UHF-GWs), covering the MHz to GHz range. [...]
arXiv:2011.12414; CERN-TH-2020-185; HIP-2020-28/TH; DESY 20-195; CERN-TH-2020-185; HIP-2020-28/TH; DESY 20-195.-
2021-12-06 - 60 p.
- Published in : Living Rev. Relativ. 24 (2021) 4
Fulltext: document - PDF; 2011.12414 - PDF;
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Characterizing the Cosmological Gravitational Wave Background Anisotropies and non-Gaussianity
/ Bartolo, Nicola (U. Padua, Dept. Phys. Astron. ; INFN, Padua ; Padua Observ.) ; Bertacca, Daniele (U. Padua, Dept. Phys. Astron. ; INFN, Padua) ; Matarrese, Sabino (U. Padua, Dept. Phys. Astron. ; INFN, Padua ; Padua Observ. ; GSSI, Aquila) ; Peloso, Marco (Padua U., Dept. Pure Appl. Math. ; INFN, Padua) ; Ricciardone, Angelo (INFN, Padua) ; Riotto, Antonio (Geneva U., CAP ; CERN ; Geneva U., Dept. Theor. Phys.) ; Tasinato, Gianmassimo (Swansea U.)
A future detection of the Stochastic Gravitational Wave Background (SGWB) with GW experiments is expected to open a new window on early universe cosmology and on the astrophysics of compact objects. In this paper we study SGWB anisotropies, that can offer new tools to discriminate between different sources of GWs. [...]
arXiv:1912.09433.-
2020-07-17 - 22 p.
- Published in : Phys. Rev. D 102 (2020) 023527
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Probing non-Gaussian Stochastic Gravitational Wave Backgrounds with LISA
/ Bartolo, Nicola (Padua U. ; INFN, Padua ; Padua Observ.) ; Domcke, Valerie (DESY) ; Figueroa, Daniel G. (EPFL, Lausanne, LPPC) ; García-Bellido, Juan (CERN ; Madrid, IFT) ; Peloso, Marco (Padua U. ; Minnesota U.) ; Pieroni, Mauro (Madrid, IFT) ; Ricciardone, Angelo (Stavanger U.) ; Sakellariadou, Mairi (King's Coll. London) ; Sorbo, Lorenzo (Massachusetts U., Amherst) ; Tasinato, Gianmassimo (Swansea U.)
The stochastic gravitational wave background (SGWB) contains a wealth of information on astrophysical and cosmological processes. A major challenge of upcoming years will be to extract the information contained in this background and to disentangle the contributions of different sources. [...]
arXiv:1806.02819; UMN-TH/3720-18; CERN-TH-2018-130; IFT-UAM/CSIC-18-58; DESY 18-086; KCL-PH-TH/2018-22; ACFI-T18-08; UMN-TH-3720-18; IFT-UAM-CSIC-18-58; DESY-18-086; KCL-PH-TH-2018-22.-
2018-11-21 - 33 p.
- Published in : JCAP 11 (2018) 034
Fulltext: PDF;
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Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves
/ Bartolo, Nicola (Padua U. ; INFN, Padua ; Padua Observ.) ; Caprini, Chiara (APC, Paris) ; Domcke, Valerie (APC, Paris) ; Figueroa, Daniel G. (CERN) ; Garcia-Bellido, Juan (Madrid, IFT) ; Guzzetti, Maria Chiara (Padua U. ; INFN, Padua) ; Liguori, Michele (Padua U. ; INFN, Padua ; Padua Observ.) ; Matarrese, Sabino (Padua U. ; INFN, Padua ; Padua Observ. ; GSSI, Aquila) ; Peloso, Marco (Minnesota U.) ; Petiteau, Antoine (APC, Paris) et al.
We investigate the potential for the LISA space-based interferometer to detect the stochastic gravitational wave background produced from different mechanisms during inflation. Focusing on well-motivated scenarios, we study the resulting contributions from particle production during inflation, inflationary spectator fields with varying speed of sound, effective field theories of inflation with specific patterns of symmetry breaking and models leading to the formation of primordial black holes. [...]
arXiv:1610.06481; ACFI-T16-19; UMN-TH-3608-16; CERN-TH-2016-222; KCL-PH-TH-2016-58; IFT-UAM-CSIC-16-104.-
2016-12-14 - 63 p.
- Published in : JCAP 12 (2016) 026
Fulltext: PDF; External link: Preprint
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Post-Inflationary Gravitino Production Revisited
/ Ellis, John (CERN ; King's Coll. London) ; Garcia, Marcos A. G. (Minnesota U., Theor. Phys. Inst.) ; Nanopoulos, Dimitri V. (Athens Academy ; HARC, Woodlands ; Texas A-M) ; Olive, Keith A. (Minnesota U., Theor. Phys. Inst.) ; Peloso, Marco (Minnesota U., Theor. Phys. Inst.)
We revisit gravitino production following inflation. As a first step, we review the standard calculation of gravitino production in the thermal plasma formed at the end of post-inflationary reheating when the inflaton has completely decayed. [...]
arXiv:1512.05701; KCL-PH-TH-2015-46; LCTS-2015-33; CERN-PH-TH-2015-239; ACT-10-15; UMN-TH-3511-15; FTPI-MINN-15-48; MI-TH-1541; KCL-PH-TH-2015-46; LCTS-2015-33; CERN-PH-TH-2015-239; ACT-10-15; MI-TH-1541; UMN-TH-3511-15; FTPI-MINN-15-48.-
Geneva : CERN, 2016-03-04 - 34 p.
- Published in : JCAP 03 (2016) 008
Fulltext: PDF; IOP Open Access article: PDF; External link: Preprint
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