On D-branes in the Nappi-Witten and GMM gauged WZW models

Abstract

We construct D-branes in the Nappi-Witten (NW) and Guadagnini-Martellini-Mintchev (GMM) gauged WZW models. For the $SL(2,R)\times SU(2)/U(1)\times U(1)$ NW and $SU(2)\times SU(2)/U(1)$ GMM models we present the explicit equations describing the D-brane hypersurfaces in their target spaces. In the latter case we show that the D-branes are classified according to the Cardy theorem. We also present the semiclassical mass computation and find its agreement with the CFT predictions.

arXiv comment16 pages, harvmac

References in corpus (17)

• D-branes in the WZW model
• Geometrical interpretation of D-branes in gauged WZW models
• From Big Bang to Big Crunch and Beyond
• A Closed, Expanding Universe in String Theory
• Open Strings and D-branes in WZNW model
• Conformal field theory: a case study
• Boundary WZW, G/H, G/G and CS theories
• On the hierarchy of symmetry breaking D-branes in group manifolds
• D-Branes on a gauged WZW model
• Tension is Dimension
• On Least Action D-Branes
• Flux stabilization in compact groups
• A note on D-branes in group manifolds: flux quantisation and D0-charge
• Conformal Sigma Models for a Class of $T^{p,q}$ Spaces
• D-branes in asymmetrically gauged WZW models and axial-vector duality
• Non-maximally symmetric D-branes on group manifold in the Lagrangian approach
• On DBI action of the non-maximally symmetric D-branes on SU(2)

Cited by in corpus (6)

• Little Strings, Long Strings, and Fuzzballs
• Mass scales and crossover phenomena in the Homogeneous Sine-Gordon Models
• Asymmetric Cosets
• Symmetry breaking, permutation D-branes on group manifolds: boundary states and geometric description
• D-branes in a Big Bang/Big Crunch Universe: Nappi-Witten Gauged WZW Model
• M2 to D2 and vice versa by 3-Lie and Lie bialgebra