Large tensor-to-scalar ratio and running of the scalar spectral index with instep inflation

If a sizeable tensor-to-scalar ratio ~ 0.1 turns out to be detected and a negative running of the scalar spectral index ~ 10 super(-2) 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, l...

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Veröffentlicht in:	Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2015-02, Vol.91 (4), Article 043502
Hauptverfasser:	Ballesteros, Guillermo, Casas, J. Alberto
Format:	Artikel
Sprache:	eng
Schlagworte:	Cosmology Flats Gravitation Inflation Operators Running Scalars Spectra
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creator	Ballesteros, Guillermo Casas, J. Alberto
description	If a sizeable tensor-to-scalar ratio ~ 0.1 turns out to be detected and a negative running of the scalar spectral index ~ 10 super(-2) 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 nonrenormalizable operators) can explain those features and produce enough inflation in the slow-roll regime.
doi_str_mv	10.1103/PhysRevD.91.043502
format	Article
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subjects	Cosmology Flats Gravitation Inflation Operators Running Scalars Spectra
title	Large tensor-to-scalar ratio and running of the scalar spectral index with instep inflation
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