Tachyon Tube and Supertube

TL;DR

This paper finds supersymmetric tubular solutions in unstable D3-branes, called supertubes, which combine fundamental strings, D0-branes, and D2-branes, and explores their properties including flux winding and noncritical electric fields.

Contribution

It introduces new tachyon tube solutions representing supertubes with BPS-like properties in unstable D3-branes, expanding understanding of bound states and flux configurations.

Findings

Supertube solutions exhibit BPS-like properties.

Boosting solutions creates helical electric fluxes.

Noncritical electric field tachyon tubes are discussed.

Abstract

We search for tubular solutions in unstable D3-brane. With critical electric field E=1, solutions representing supertubes, which are supersymmetric bound states of fundamental strings, D0-branes, and a cylindrical D2-brane, are found and shown to exhibit BPS-like property. We also point out that boosting such a {\it tachyon tube} solution generates string flux winding around the tube, resulting in helical electric fluxes on the D2-brane. We also discuss issues related to fundamental string, absence of magnetic monopole, and finally more tachyon tubes with noncritical electric field.