Anti-D-brane as Dark Matter in Warped String Compactification

TL;DR

This paper proposes that anti-D-branes in warped string compactifications can serve as dark matter candidates, with potential production mechanisms linked to D/anti-D interactions during inflation.

Contribution

It introduces a novel dark matter candidate arising from anti-D-branes in warped geometries and explores their production scenarios within string theory.

Findings

Anti-D-branes near the throat bottom behave like dark matter.

Possible production mechanisms include D/anti-D interactions during inflation.

The model connects string theory objects with cosmological dark matter.

Abstract

It is pointed out that in the warped string compactification, motion of anti-D-branes near the bottom of a throat behaves like dark matter. Several scenarios for production of the dark matter are suggested, including one based on the D/anti-D interaction at the late stage of D/anti-D inflation.