Inflation from Warped Space

TL;DR

This paper explores a string theory-based inflation model where warped space dynamics enable prolonged inflation, analyzing its field theory, string embedding, reheating effects, and cosmological implications like cosmic strings.

Contribution

It introduces a multi-throat brane inflation model within warped flux compactifications, combining field theory, string theory, and cosmological phenomena.

Findings

Successful embedding of inflation in warped flux compactifications

Analysis of cosmic string tension in the model

Discussion of reheating effects by relativistic branes

Abstract

A long period of inflation can be triggered when the inflaton is held up on the top of a steep potential by the infrared end of a warped space. We first study the field theory description of such a model. We then embed it in the flux stabilized string compactification. Some special effects in the throat reheating process by relativistic branes are discussed. We put all these ingredients into a multi-throat brane inflationary scenario. The resulting cosmic string tension and a multi-throat slow-roll model are also discussed.