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Inflation in multi-field modified DBM potentials

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Published 27 September 2018 © 2018 IOP Publishing Ltd and Sissa Medialab
, , Citation Sonia Paban and Robert Rosati JCAP09(2018)042 DOI 10.1088/1475-7516/2018/09/042

1475-7516/2018/09/042

Abstract

We study multi-field inflation in random potentials generated via a non-equilibrium random matrix theory process. We make a novel modification of the process to include correlations between the elements of the Hessian and the height of the potential, similar to a Random Gaussian Field (RGF). We present the results of over 50,000 inflationary simulations involving 5-100 fields. For the first time, we present results of Script O(100) fields using the full `transport method', without slow-roll approximation. We conclude that Planck compatibility is a common prediction of such models, however significant isocurvature power at the end of inflation is possible.

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10.1088/1475-7516/2018/09/042