Dbranes in topological membranes
Abstract
It is shown how twodimensional states corresponding to Dbranes arise in orbifolds of topologically massive gauge and gravity theories. Brane vertex operators naturally appear in induced worldsheet actions when the threedimensional gauge theory is minimally coupled to external charged matter and the orbifold relations are carefully taken into account. Boundary states corresponding to Dbranes are given by vacuum wavefunctionals of the gauge theory in the presence of the matter, and their various constraints, such as the Cardy condition, are shown to arise through compatibility relations between the orbifold charges and bulk gauge invariance. We show that with a further conformallyinvariant coupling to a dynamical massless scalar field theory in three dimensions, the brane tension is naturally set by the bulk mass scales and arises through dynamical mechanisms. As an auxilliary result, we show how to describe string descendent states in the threedimensional theory through the construction of gaugeinvariant excited wavefunctionals.
 Publication:

Nuclear Physics B
 Pub Date:
 January 2004
 DOI:
 10.1016/j.nuclphysb.2003.10.014
 arXiv:
 arXiv:hepth/0308101
 Bibcode:
 2004NuPhB.676..243C
 Keywords:

 11.25.w;
 11.25.Hf;
 11.15.q;
 Strings and branes;
 Conformal field theory algebraic structures;
 Gauge field theories;
 High Energy Physics  Theory
 EPrint:
 78 pages, 12 figures