Assisted Inflation from Geometric Tachyon

TL;DR

This paper explores how the dynamics of D3-branes near NS5-branes can lead to assisted inflation in four-dimensional cosmology, drawing parallels with tachyon-assisted inflation models.

Contribution

It demonstrates that the rolling of multiple D3-branes near NS5-branes can produce slow-roll assisted inflation, similar to tachyon-assisted inflation on unstable D-branes.

Findings

System induces slow-roll inflation with multiple D3-branes.

Inflationary behavior parallels tachyon-assisted models.

Provides a string-theoretic realization of assisted inflation.

Abstract

We study the effect of rolling of N D3-branes in the vicinity of NS5-branes. We find out that this system coupled with the four dimensional gravity gives the slow roll assisted inflation of the scalar field theory. Once again this expectation is exactly similar to that of N-tachyon assisted inflation on unstable D-branes.