Abelian duality, walls and boundary conditions in diverse dimensions

Abstract

We systematically apply the formalism of duality walls to study the action of duality transformations on boundary conditions and local and nonlocal operators in two, three, and four-dimensional free field theories. In particular, we construct a large class of D-branes for two-dimensional sigma-models with toroidal targets and determine the action of the T-duality group on it. It is manifest in this formalism that T-duality transformations on D-branes are given by a differential-geometric version of the Fourier-Mukai transform.

37 pages, latex

References in corpus (2)

• Bi-branes: Target Space Geometry for World Sheet topological Defects
• Some remarks on defects and T-duality

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