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T-Dualities and Courant Algebroid Relations
Thomas C. De Fraja, Vincenzo Emilio Marotta, Richard J. Szabo
We develop a new approach to T-duality based on Courant algebroid relations which subsumes the usual T-duality as well as its various generalisations. Starting from a relational de…
Smooth 2-Group Extensions and Symmetries of Bundle Gerbes
Severin Bunk, Lukas Müller, Richard J. Szabo
We study bundle gerbes on manifolds that carry an action of a connected Lie group . We show that these data give rise to a smooth 2-group extension of by the smooth 2-gr…
Cheeger-Simons differential characters with compact support and Pontryagin duality
Christian Becker, Marco Benini, Alexander Schenkel +1
By adapting the Cheeger-Simons approach to differential cohomology, we establish a notion of differential cohomology with compact support. We show that it is functorial with respec…