D-branes in the Euclidean $AdS_3$ and T-duality
Abstract
Description
We show that D-branes in the Euclidean $AdS_3$ can be naturally associated to the maximally isotropic subgroups of the Lu-Weinstein double of SU(2). This picture makes very transparent the residual loop group symmetry of the D-brane configurations and gives also immediately the D-branes shapes and the $σ$-model boundary conditions in the de Sitter T-dual of the $SL(2,C)/SU(2)$ WZW model.
29 pages, LaTeX, references added
29 pages, LaTeX, references added