Inflation from D-\bar{D} brane annihilation

TL;DR

This paper proposes a string theory-based inflation model where D-brane annihilation creates a vortex that drives cosmic inflation, with a natural mechanism for ending inflation and localizing matter.

Contribution

It introduces a novel inflation scenario from D-brane annihilation involving vortex formation, linking string theory to cosmological inflation.

Findings

Vortex formation on annihilated branes can trigger inflation.

A mechanism for ending inflation via vortex motion is proposed.

The model suggests a way to localize matter on our universe.

Abstract

We demonstrate that the initial conditions for inflation are met when D5 and \bar{D}5 branes annihilate. This scenario uses Sen's conjecture that a co-dimension two vortex forms on the worldvolume of the annihilated 5-brane system. Analogous to a "Big Bang", when the five branes annihilate, a vortex localized on a 3-brane forms and its false vacuum energy generates an inflationy space-time. We also provide a natural mechanism for ending inflation via the motion of the vortex in the bulk due to its extrinsic curvature. We also suggest a consistent way to end inflation and localize matter on our space-time.