Cosmic D--term Strings as Wrapped D3 Branes

TL;DR

This paper models cosmic D--term strings as wrapped D3 branes on a resolved conifold, linking their tension to brane configurations and proposing a new type of cosmic string from fractional D1 branes.

Contribution

It provides a brane-based description of D--term strings and introduces a novel cosmic string arising from fractional D1 branes on D3 branes.

Findings

Wrapped D3 branes' tension matches D--term string tension.

Matter content corresponds to a space-filling D3 brane transverse to the conifold.

Proposal of a new cosmic string from fractional D1 branes.

Abstract

We describe cosmic D--term strings as D3 branes wrapped on a resolved conifold. The matter content that gives rise to D--term strings is shown to describe the world--volume theory of a space--filling D3 brane transverse to the conifold which itself is a wrapped D5 brane. We show that, in this brane theory, the tension of the wrapped D3 brane mathces that of the D--term string. We argue that there is a new type of cosmic string which arises from fractional D1 branes on the world--volume of a fractional D3 brane.