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Cordonier-Tello, Fabrizio; Lüst, Dieter; Plauschinn, Erik (2018): Open-string T-duality and applications to non-geometric backgrounds. In: Journal of High Energy Physics, No. 8, 198


We revisit T-duality transformations for the open string via Buscher's procedure and work-out technical details which have been missing so far in the literature. We take into account non-trivial topologies of the world-sheet, we consider T-duality along directions with Neumann as well as Dirichlet boundary conditions, and we include collective T-duality along multiple directions. We illustrate this formalism with the example of the three-torus with H-flux and its T-dual backgrounds, and we discuss global properties of open-string boundary conditions on such spaces.