arXiv:1406.3342 [astro-ph.CO]AbstractReferencesReviewsResources
Large tensor-to-scalar ratio and running of the scalar spectral index with Instep Inflation
Guillermo Ballesteros, J. Alberto Casas
Published 2014-06-12, updated 2015-01-08Version 2
If a sizeable tensor-to-scalar ratio ~0.1 turns out to be detected and a negative running of the scalar spectral index ~0.01 is significantly required by the data, the vast majority of single field models of inflation will be ruled out. We show that a flat tree-level effective potential, lifted by radiative corrections and by the imprints of a high energy scale (in the form of non-renormalizable operators) can explain those features and produce enough inflation in the slow-roll regime.
Comments: 16 pages, 2 figures, to appear in Physical Review D
Keywords: scalar spectral index, large tensor-to-scalar ratio, instep inflation, high energy scale, flat tree-level effective potential
Tags: journal article
Related articles: Most relevant | Search more
Large Tensor-to-Scalar Ratio in Small-Field Inflation
arXiv:1409.8151 [astro-ph.CO] (Published 2014-09-29)
Running of scalar spectral index in multi-field inflation
Topological Inflation with Large Tensor-to-scalar Ratio