5 papers
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…
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…
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…
Topology and Wilson lines: global aspects of the double copy
Luigi Alfonsi, Chris D. White, Sam Wikeley
The Kerr-Schild double copy relates exact solutions of gauge and gravity theories. In all previous examples, the gravity solution is associated with an abelian-like gauge theory ob…
Global Double Field Theory is Higher Kaluza-Klein Theory
Luigi Alfonsi
Kaluza-Klein Theory states that a metric on the total space of a principal bundle , if it is invariant under the principal action of , naturally reduces to a met…