Baryons and String Creation from the Fivebrane Worldvolume Action

TL;DR

This paper constructs explicit BPS solutions describing string creation when a D5-brane moves across D3-branes, providing insights into gauge theory multi-quark states via the AdS/CFT correspondence.

Contribution

It presents new exact solutions of the D5-brane worldvolume action in a D3-brane background, elucidating the string creation process and its gauge theory interpretation.

Findings

Explicit BPS solutions for D5-branes in D3-brane backgrounds.

Description of fundamental string bundles created during brane crossing.

Extensions relating to gauge theory multi-quark states.

Abstract

We construct BPS-exact solutions of the worldvolume Born-Infeld plus WZW action of a D5-brane in the background of N D3-branes. The non-trivial background metric and RR five-form field strength play a crucial role in the solution. When a D5-brane is dragged across a stack of N D3-branes a bundle of N fundamental strings joining the two types of branes is created, as in the Hanany-Witten effect. Our solutions give a detailed description of this bundle in terms of a D5-brane wrapped on a sphere. We discuss extensions of these solutions which have an interpretation in terms of gauge theory multi-quark states via the AdS/CFT correspondence.