We give a covariant realization of the doubled sigma-model formulation of duality-symmetric
string theory within the general framework of para-Hermitian geometry. We define a notion of …

We present a formulation of Double Field Theory with a Drinfeld double as extended
spacetime. It makes Poisson-Lie T-duality (including abelian and non-abelian T-duality as …

A bstract The worldsheet theories that describe Poisson-Lie T-dualisable σ-models on group
manifolds as well as integrable η, λ and β-deformations provide examples of ℰ-models …

A bstract In this work the exceptional field theory formulation of supergravity with SL (5)
gauge group is considered. This group appears as a U-duality group of D= 7 maximal …

String theory has-duality symmetry when the target space has Abelian isometries. A
generalization of-duality, where the isometry group is non-Abelian, is known as non-Abelian …

A bstract The α′-deformed frame-like Double Field Theory (DFT) is a T-duality and gauge
invariant extension of DFT in which generalized Green-Schwarz transformations provide a …

A family of algebras that extends the Lie algebra of the Drinfel'd double is proposed. This
allows us to systematically construct the generalized frame fields which realize the proposed …

A bstract We describe the doubled space of Double Field Theory as a group manifold G with
an arbitrary generalized metric. Local information from the latter is not relevant to our …

A bstract We use exceptional field theory to establish a duality between certain consistent 7-
dimensional truncations with maximal SUSY from IIA to IIB. We use this technique to obtain …

Poisson-Lie (PL) T-duality has received much attention over the last five years in connection
with integrable string worldsheet theories. At the level of the worldsheet, the algebraic …