Boundary state in open string channel and open/closed string field theory
Abstract
Description
We generalize the idea of boundary states to open string channel. They describe the emission and absorption of the open string in the presence of intersecting D-branes. We study the algebra between such states under the star products of string field theory and confirm that they are projectors in a generalized sense. Based on this observation, we propose a modular dual description of Witten's open string field theory which seems to be an appropriate set-up to study D-branes by string field theory.
13 pages, 4 figures, using a class file qts-proc.cls, Proceeding of the workshop QTS-4, Varna, Burgalia (16-21 August 2005), some corrections
13 pages, 4 figures, using a class file qts-proc.cls, Proceeding of the workshop QTS-4, Varna, Burgalia (16-21 August 2005), some corrections