Topological Dbranes from Descent
Abstract
Witten couples the open topological Bmodel to a holomorphic vector bundle by adding to the boundary of the worldsheet a Wilson loop for an integrable connection on the bundle. Using the descent procedure for boundary vertex operators in this context, I generalize this construction to write a worldsheet coupling for a graded vector bundle with an integrable superconnection. I then compute the open string vertex operators between two such boundaries. A theorem of J. Block gives that this is equivalent to coupling the Bmodel to an arbitrary object in the derived category.
 Publication:

arXiv eprints
 Pub Date:
 August 2008
 DOI:
 10.48550/arXiv.0808.0168
 arXiv:
 arXiv:0808.0168
 Bibcode:
 2008arXiv0808.0168B
 Keywords:

 High Energy Physics  Theory
 EPrint:
 18+1 pages, uses utarticle.cls, v5: added discussion of boundary conditions