Mimicking features in alternatives to inflation with interacting spectator fields

Research output: Contribution to journal › Article › Research › peer review

Authors

  • Guillem Domènech
  • Javier Rubio
  • Julius Wons

External Research Organisations

  • Heidelberg University
  • University of Helsinki
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Details

Original languageEnglish
Pages (from-to)263-269
Number of pages7
JournalPhysics Letters: B
Volume790
Early online date23 Jan 2019
Publication statusPublished - 10 Mar 2019
Externally publishedYes

Abstract

It has been argued that oscillatory features from spectator fields in the primordial power spectrum could be a probe of alternatives to inflation. In this work, we soften this claim by showing that the frequency and amplitude dependence of the patterns appearing in these scenarios could be mimicked by field interactions during inflation. The degeneracy of the frequency holds for the n-point correlation functions, while the degeneracy of the amplitude is broken at the level of non-gaussianities.

Keywords

    Alternatives to inflation, Early universe, Inflation, Primordial features, Primordial standard clocks

ASJC Scopus subject areas

Cite this

Mimicking features in alternatives to inflation with interacting spectator fields. / Domènech, Guillem; Rubio, Javier; Wons, Julius.
In: Physics Letters: B, Vol. 790, 10.03.2019, p. 263-269.

Research output: Contribution to journal › Article › Research › peer review

Domènech G, Rubio J, Wons J. Mimicking features in alternatives to inflation with interacting spectator fields. Physics Letters: B. 2019 Mar 10;790:263-269. Epub 2019 Jan 23. doi: 10.1016/j.physletb.2019.01.039
Domènech, Guillem ; Rubio, Javier ; Wons, Julius. / Mimicking features in alternatives to inflation with interacting spectator fields. In: Physics Letters: B. 2019 ; Vol. 790. pp. 263-269.
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