A Gravity Dual of Ultra-slow Roll Inflation
High Energy Physics - Theory
2016-10-04 v3
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.
Keywords
Cite
@article{arxiv.1512.08556,
title = {A Gravity Dual of Ultra-slow Roll Inflation},
author = {Lilia Anguelova},
journal= {arXiv preprint arXiv:1512.08556},
year = {2016}
}
Comments
27 pages; explanations and references added, journal version