Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves

Nicola Bartolo, Chiara Caprini, Valerie Domcke, Daniel G. Figueroa, Juan Garcia-Bellido, Maria Chiara Guzzetti, Michele Liguori, Sabino Matarrese, Marco Peloso, Antoine Petiteau, Angelo Ricciardone, Mairi Sakellariadou, Lorenzo Sorbo, Gianmassimo Tasinato

Research output: Contribution to journalArticlepeer-review

112 Scopus citations

Abstract

We investigate the potential for the LISA space-based interferometer to detect the stochastic gravitational wave background produced from different mechanisms during in ation. Focusing on well-motivated scenarios, we study the resulting contributions from particle production during in ation, in ationary spectator fields with varying speed of sound, effective field theories of in ation with specific patterns of symmetry breaking and models leading to the formation of primordial black holes. The projected sensitivities of LISA are used in a model-independent way for various detector designs and configurations. We demonstrate that LISA is able to probe these well-motivated in ationary scenarios beyond the irreducible vacuum tensor modes expected from any in ationary background.

Original languageEnglish (US)
Article number026
JournalJournal of Cosmology and Astroparticle Physics
Volume2016
Issue number12
DOIs
StatePublished - 2016

Bibliographical note

Funding Information:
We thank Germano Nardini for helping in this project. We thank the University of Stavanger for hosting the second eLISA workshop, where this work has started. M.C.G. and N.B. thank Matteo Fasiello for useful correspondence. V.D. acknowledges the financial support of the UnivEarthS Labex program at Sorbonne Paris Cité (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02) and the Paris Centre for Cosmological Physics. The work of J.G-B. is partially supported by the Research Project of the Spanish MINECO, FPA2013-47986-03-3P, and the Centro de Excelencia Severo Ochoa Program SEV-2012-0249. M.C.G. thanks financial support from a Cariparo foundation grant. N.B., M.L. and S.M. acknowledge partial financial support by the ASI/INAF Agreement I/072/09/0 for the Planck LFI Activity of Phase E2. The work of M.P. is partially supported from the DOE grant DE-SC0011842 at the University of Minnesota. The work of L.S. is partially supported by the US NSF grant PHY-1520292. The work of G.T. is partially supported by STFC grant ST/N001435/1.

Funding Information:
We thank Germano Nardini for helping in this project. We thank the University of Stavanger for hosting the second eLISA workshop, where this work has started. M.C.G. and N.B. thank Matteo Fasiello for useful correspondence. V.D. acknowledges the financial support of the UnivEarthS Labex program at Sorbonne Paris Cité(ANR-10-LABX-0023 and ANR-11-IDEX-0005-02) and the Paris Centre for Cosmological Physics. The work of J.G-B. is partially supported by the Research Project of the Spanish MINECO, FPA2013-47986-03-3P, and the Centro de Excelencia Severo Ochoa Program SEV-2012-0249. M.C.G. thanks financial support from a Cariparo foundation grant. N.B., M.L. and S.M. acknowledge partial financial support by the ASI/INAF Agreement I/072/09/0 for the Planck LFI Activity of Phase E2. The work of M.P. is partially supported from the DOE grant DE-SC0011842 at the University of Minnesota. The work of L.S. is partially supported by the US NSF grant PHY-1520292. The work of G.T. is partially supported by STFC grant ST/N001435/1.

Publisher Copyright:
© 2016 IOP Publishing Ltd and Sissa Medialab srl.

Keywords

  • Gravitational waves / experiments
  • Gravitational waves / theory
  • In ation, primordial gravitational waves (theory)

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