The observational position of simple non-minimally coupled inflationary scenarios

David C. Edwards*, Andrew R. Liddle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We consider two classes of non-minimally coupled inflation models; those with a quadratic coupling of the inflaton to gravity, and the 'Universal Attractor' models where the coupling is connected to the potential. We make a detailed analysis of the attractor structure in the latter case, identifying a shift of the attractor from the Starobinsky point and determining conditions for approach to the attractor. We then assess the viability of the models under different interpretations of the BICEP2 experiment's detection of B-mode polarisation, finding strong constraints on the non-minimal coupling in the case where the B-modes have mostly primordial origin.

Original languageEnglish
Article number052
Number of pages13
JournalJournal of Cosmology and Astroparticle Physics (JCAP)
Issue number9
DOIs
Publication statusPublished - Sept 2014

Keywords / Materials (for Non-textual outputs)

  • inflation
  • cosmological parameters from CMBR
  • SPECTRA
  • MODELS

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