Abstract
We consider inflation with , allowing small deviation from inflation. Using the inflaton potential in the Einstein frame, we construct a consistency relation between the scalar spectral index, the tensor-to-scalar ratio, as well as the running of the scalar spectral index, which will be useful to constrain a deviation from inflation in future observations.
- Received 13 December 2014
DOI:https://doi.org/10.1103/PhysRevD.91.064016
© 2015 American Physical Society