Models of Inflation on D-Branes

TL;DR

This paper constructs various inflation models using D-brane configurations, connecting them through parameter space deformations, and explores their implications for scalar potential parameters and compactified scenarios.

Contribution

It introduces a unified brane-based framework for multiple inflation models, linking them via brane orientation deformations and extending to compactified versions.

Findings

Models of chaotic, slow-roll, hybrid, and D-term inflation derived from brane setups.

Inflationary models are interconnected through continuous parameter variations.

Compactified brane models also support inflationary scenarios.

Abstract

We obtain models of chaotic, slow--roll, hybrid and D--term inflation from the Hanany--Witten brane configuration and its deformations. The deformations are given by the different orientations of the branes and control the parameters of the scalar potential such as the inflaton mass, Yukawa couplings and the anomalous D--term. The different inflationary models are continuously connected and arise in different limits of the parameter space. We describe a compactified version of the brane construction that also leads to models of inflation.