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hep-th2021
Extended Field Theories as higher Kaluza-Klein theories
Luigi Alfonsi
Extended Field Theories include Double Field Theory (DFT) and Exceptional Field Theory, which are respectively the T- and U-duality covariant formulations of the supergravity limit…
hep-th2021
Towards an extended/higher correspondence -- Generalised geometry, bundle gerbes and global Double Field Theory
Luigi Alfonsi
In this short paper, we will review the proposal of a correspondence between the doubled geometry of Double Field Theory and the higher geometry of bundle gerbes. Double Field Theo…
hep-th2021
Double Field Theory and Geometric Quantisation
Luigi Alfonsi, David S. Berman
We examine various properties of double field theory and the doubled string sigma model in the context of geometric quantisation. In particular we look at T-duality as the symplect…