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arXiv · 1406.3342

Large tensor-to-scalar ratio and running of the scalar spectral index with Instep Inflation

Guillermo Ballesteros·J. Alberto Casas
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Abstract

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.

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Guillermo Ballesteros, J. Alberto Casas. 2015-01-08. Large tensor-to-scalar ratio and running of the scalar spectral index with Instep Inflation. https://doi.org/10.1103/physrevd.91.043502

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