D-brane dynamics in thec=1matrix model

Authors:
Publisher website
Google Scholar
Abstract
Recent work has shown that unstable D-branes in two-dimensional string theory are represented by eigenvalues in a dual matrix model. We elaborate on this proposal by showing how to systematically include higher order effects in string perturbation theory. The full closed string state produced by a rolling open string tachyon corresponds to a sum of string amplitudes with any number of boundaries and closed string vertex operators. These contributions are easily extracted from the matrix model. As in the AdS-CFT correspondence, the sum of planar diagrams in the open string theory is directly related to the classical theory in the bulk; i.e., sphere diagrams. We also comment on the description of static D-branes in the matrix model, in terms of a solution representing a deformed Fermi sea.

This publication has 46 references indexed in Scilit: