Global and Local D-vortices

TL;DR

This paper investigates global and local D-vortex solutions in a brane-antibrane system with a complex tachyon and gauge fields, proposing these as potential cosmic D-strings within superstring theory.

Contribution

It presents the first static regular global and local D-vortex solutions in a Born-Infeld effective field theory with electric fields, extending the understanding of cosmic D-strings.

Findings

Found static regular global and local D-vortex solutions

Demonstrated solutions could represent cosmic D-strings

Extended discussion to DF-strings

Abstract

Codimension-two objects on a system of brane-antibrane are studied in the context of Born-Infeld type effective field theory with a complex tachyon and U(1)$\times$U(1) gauge fields. When the radial electric field is turned on in D2${\bar {\rm D}}$2, we find static regular global and local D-vortex solutions which could be candidates of straight cosmic D-strings in a superstring theory. A natural extension to DF-strings is briefly discussed.