Bulk perturbations of N=2 branes

Abstract

The evolution of supersymmetric A-type D-branes under the bulk renormalization group flow between two different N=2 minimal models is studied. Using the Landau-Ginzburg description we show that a specific set of branes decouples from the infrared theory, and we make detailed predictions for the behavior of the remaining branes. The Landau-Ginzburg picture is then checked against a direct conformal field theory analysis. In particular we construct a natural index pairing which is preserved by the RG flow, and show that the branes that decouple have vanishing index with the surviving branes.

35 pages (30 pages plus title and references), 8 figures

References in corpus (1)

• On Decay of K-theory

Cited by in corpus (4)

• Phases Of N=2 Theories In 1+1 Dimensions With Boundary
• Note on New Massive Gravity in $Ad{S}_3$
• Defects and Bulk Perturbations of Boundary Landau-Ginzburg Orbifolds
• Bulk induced boundary perturbations for N=1 superconformal field theories