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Enhancing Inflationary Tensor Modes through Spectator Fields

Cosmology and Nongalactic Astrophysics 2014-02-20 v2 General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
Authors: Matteo Biagetti , Matteo Fasiello , Antonio Riotto
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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.

Keywords

cosmic inflation

Cite

@article{arxiv.1305.7241,
  title  = {Enhancing Inflationary Tensor Modes through Spectator Fields},
  author = {Matteo Biagetti and Matteo Fasiello and Antonio Riotto},
  journal= {arXiv preprint arXiv:1305.7241},
  year   = {2014}
}

Comments

5 pages, 2 figures

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