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1.
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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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2.
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New horizons for fundamental physics with LISA
/ LISA Collaboration
The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders about the fundamental theory of nature at play in the extreme gravity regime, where the gravitational interaction is both strong and dynamical. In this white paper, the Fundamental Physics Working Group of the LISA Consortium summarizes the current topics in fundamental physics where LISA observations of GWs can be expected to provide key input. [...]
arXiv:2205.01597.-
2022-06-30 - 116 p.
- Published in : Living Rev. Relativ. 25 (2022) 4
Fulltext: 2205.01597 - PDF; document - PDF;
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3.
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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
Fulltext: PDF;
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4.
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From Primordial Black Holes Abundance to Primordial Curvature Power Spectrum (and back)
/ Kalaja, Alba (Padua U., Astron. Dept. ; ICC, Barcelona U. ; U. Groningen, VSI) ; Bellomo, Nicola (ICC, Barcelona U. ; U. Barcelona (main)) ; Bartolo, Nicola (Padua U., Astron. Dept. ; INFN, Padua ; Padua Observ.) ; Bertacca, Daniele (Padua U., Astron. Dept. ; INFN, Padua) ; Matarrese, Sabino (Padua U., Astron. Dept. ; INFN, Padua ; Padua Observ. ; GSSI, Aquila) ; Musco, Ilia (ICC, Barcelona U.) ; Raccanelli, Alvise (ICC, Barcelona U. ; CERN) ; Verde, Licia (ICC, Barcelona U. ; ICREA, Barcelona)
In the model where Primordial Black Holes (PBHs) form from large primordial curvature (C) perturbations, i.e., CPBHs, constraints on PBH abundance provide in principle constraints on the primordial curvature power spectrum. This connection however depends necessarily on the details of PBH formation mechanism. [...]
arXiv:1908.03596.-
2019-10-11 - 52 p.
- Published in : JCAP 1910 (2019) 031
Fulltext: PDF;
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5.
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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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6.
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7.
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Exploring Cosmic Origins with CORE: Inflation
/ Finelli, Fabio (Bologna Observ. ; INFN, Bologna) ; Bucher, Martin (APC, Paris) ; Achúcarro, Ana (Leiden U. ; Basque U., Bilbao) ; Ballardini, Mario (Bologna U. ; Bologna Observ. ; INFN, Bologna) ; Bartolo, Nicola (Padua U. ; INFN, Padua ; Padua Observ.) ; Baumann, Daniel (Cambridge U., DAMTP ; Amsterdam U.) ; Clesse, Sébastien (Aachen, Tech. Hochsch.) ; Errard, Josquin (ILP, Paris ; Paris U., VI-VII) ; Handley, Will (Cambridge U. ; Cambridge U., KICC) ; Hindmarsh, Mark (Sussex U. ; Helsinki Inst. of Phys. ; Helsinki U.) et al.
/CORE
We forecast the scientific capabilities to improve our understanding of cosmic inflation of CORE, a proposed CMB space satellite submitted in response to the ESA fifth call for a medium-size mission opportunity. The CORE satellite will map the CMB anisotropies in temperature and polarization in 19 frequency channels spanning the range 60-600 GHz. [...]
arXiv:1612.08270.-
2018-04-05 - 100 p.
- Published in : JCAP 04 (2018) 016
Fulltext: PDF;
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8.
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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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9.
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The Polarized Radiation Imaging and Spectroscopy Mission
/ PRISM Collaboration
PRISM (Polarized Radiation Imaging and Spectroscopy Mission) was proposed to ESA in May 2013 as a large-class mission for investigating within the framework of the ESA Cosmic Vision program a set of important scientific questions that require high resolution, high sensitivity, full-sky observations of the sky emission at wavelengths ranging from millimeter-wave to the far-infrared. PRISM's main objective is to explore the distant universe, probing cosmic history from very early times until now as well as the structures, distribution of matter, and velocity flows throughout our Hubble volume [...]
arXiv:1310.1554.-
2014-02-05 - 55 p.
- Published in : JCAP 02 (2014) 006
Fulltext: PDF; External link: Preprint
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10.
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Tilt and Running of Cosmological Observables in Generalized Single-Field Inflation
/ Bartolo, Nicola (Padua U. ; INFN, Padua) ; Fasiello, Matteo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Matarrese, Sabino (Padua U. ; INFN, Padua) ; Riotto, Antonio (INFN, Padua ; CERN)
Employing an effective field theory approach to inflationary perturbations, we analyze in detail the effect of curvature-generated Lagrangian operators on various observables, focusing on their running with scales. At quadratic order, we solve the equation of motion at next-to-leading leading order in a generalized slow-roll approximation for a very general theory of single-field inflation. [...]
arXiv:1010.3993; CERN-PH-TH-2010-238.-
2010 - 20 p.
- Published in : JCAP 12 (2010) 026
Fulltext: PDF; External link: Preprint
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