D Branes and Phases on String Worldsheet

TL;DR

This paper explores the relationship between D branes and phases in string theory using mirror Landau-Ginzburg models, extending previous duality derivations to include multiple D brane types and analyzing the duality from the B model perspective.

Contribution

It generalizes the worldsheet derivation of topological open/closed string duality to multiple D brane types using mirror Landau-Ginzburg models and clarifies the D brane-phase correspondence.

Findings

Extended duality derivation to multiple D branes.

Clarified D brane and C phase correspondence.

Discussed duality from B model perspective.

Abstract

We generalize the worldsheet derivation of the topological open/closed string duality given in hep-th/0205297 to cases when there are different types of D branes on the open string side. We use the mirror Landau-Ginzburg description to clarify the correspondence between D branes on the open string side and C phases on the closed string side. We also discuss the duality from the point of view of the B model.