Enhancing inflationary tensor modes through spectator fields

Matteo Biagetti; Matteo Fasiello; Antonio Riotto

doi:10.1103/PhysRevD.88.103518

Enhancing inflationary tensor modes through spectator fields

Matteo Biagetti, Matteo Fasiello, Antonio Riotto

Institute of Cosmology & Gravitation

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Abstract

We show that a large contribution to tensor modes during inflation can be generated by a spectator scalar field with speed of sound lower than unity.

Original language	English
Article number	103518
Number of pages	5
Journal	Physical Review D
Volume	88
DOIs	https://doi.org/10.1103/PhysRevD.88.103518
Publication status	Published - 13 Nov 2013

Keywords

astro-ph.CO
gr-qc
hep-ph

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10.1103/PhysRevD.88.103518

1305.7241v2
This is the accepted author manuscript of 'Enhancing inflationary tensor modes through spectator fields' published in Physical Review D 88, 103518 (2013) © American Physical Society. The final published version can be accessed at: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.88.103518
Accepted author manuscript (Post-print), 282 KB

Cite this

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title = "Enhancing inflationary tensor modes through spectator fields",

abstract = "We show that a large contribution to tensor modes during inflation can be generated by a spectator scalar field with speed of sound lower than unity. ",

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author = "Matteo Biagetti and Matteo Fasiello and Antonio Riotto",

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Enhancing inflationary tensor modes through spectator fields

Abstract

Keywords

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