The observational position of simple non-minimally coupled inflationary scenarios
arXiv:1406.5768 · doi:10.1088/1475-7516/2014/09/052
Abstract
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.
arXiv comment13 pages, 10 figures. Minor corrections to match JCAP accepted version
References in corpus (12)
- The Standard Model Higgs boson as the inflaton
- BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
- Formalising the Slow-Roll Approximation in Inflation
- A more accurate analytic calculation of the spectrum of cosmological perturbations produced during inflation
- Natural Inflation: Particle Physics Models, Power Law Spectra for Large Scale Structure, and Constraints from COBE
- COBE, Gravitational Waves, Inflation and Extended Inflation
- A universal attractor for inflation at strong coupling
- Primordial Spectral Indices from Generalized Einstein Theories
- Toward an Understanding of Foreground Emission in the BICEP2 Region
- Non-minimal coupling of the scalar field and inflation
- Comments on the Starobinsky Model of Inflation and its Descendants
- Fingerprints of Galactic Loop I on the Cosmic Microwave Background