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arXiv · 1512.08556

A Gravity Dual of Ultra-slow Roll Inflation

Lilia Anguelova
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Abstract

We study time-dependent deformations of a certain class of backgrounds in type IIB supergravity. These backgrounds are solutions of a five-dimensional consistent truncation, relevant for gauge/gravity duality, which have the form of dS_4 foliations over a fifth (radial) direction. We investigate time-dependent deformations of those solutions in the search for gravitational duals of models of glueball inflation. A particular starting ansatz enables us to find a class of analytical solutions, corresponding to an ultra-slow roll inflationary regime. This regime may play a role in understanding the low l anomaly in the power spectrum of the CMB.

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Lilia Anguelova. 2016-08-18. A Gravity Dual of Ultra-slow Roll Inflation. https://doi.org/10.1016/j.nuclphysb.2016.08.020

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