137 citations · 232 across the 12 of their papers we have counts for
13 papers
Tensor hierarchy from deformation quantisation
Falk Hassler, David Osten, Alex Swash
We show that a formal deformation quantisation of degree-2 differential graded symplectic (QP) manifolds gives rise to the complete classical kinematics and dynamics of NS-NS super…
Duality-covariant particles and exotic branes
Josh O'Connor, David Osten
In this paper we construct duality-covariant worldvolume dynamics of particles and branes. We extend known actions and phase space formulations to include the hidden symmetry…
Generalised Cartan Geometry
David Osten
This talk introduces a Cartan-geometric framework for generalised geometries governed by a differential graded Lie algebra. In contrast to ordinary Cartan geometry, the tangent bun…
Gauged Extended Field Theory and Generalised Cartan Geometry
Falk Hassler, David Osten, Alex Swash
Cartan geometry provides a unifying algebraic construction of curvature and torsion, based on an underlying model Lie algebra -- a viewpoint that can be extended naturally to the h…
Current Algebra and Generalised Cartan Geometry
Falk Hassler, Ondrej Hulik, David Osten
This article shows that the approach to generalised curvature and torsion pioneered by Polacek and Siegel [1] is a generalisation of Cartan Geometry -- rendering latter natural fro…
Integrable auxiliary field deformations of coset models
Mattia Cesàro, Axel Kleinschmidt, David Osten
We prove the existence of a family of integrable deformations of -coset models in two dimensions. Our approach uses and generalises the method of auxiliary fields tha…
On the universal exceptional structure of world-volume theories in string and M-theory
David Osten
A universal structure of world-volume theories of half-BPS branes in string and M-theory in terms of exceptional generalised geometry is observed. Previous constructions are extend…
On exceptional QP-manifolds
David Osten
The connection between two recent descriptions of tensor hierarchies - namely, infinity-enhanced Leibniz algebroids, given by Bonezzi & Hohm and Lavau & Palmkvist, the p-brane QP-m…
Lax pairs for new -symmetric coset -models and their Yang-Baxter deformations
David Osten
Two-dimensional -models with -symmetric homogeneous target spaces have been shown to be classically integrable when introducing WZ-terms in a particular way. This…
Currents, charges and algebras in exceptional generalised geometry
David Osten
A classical -invariant Hamiltonian formulation of world-volume theories of half-BPS p-branes in type IIb and eleven-dimensional supergravity is proposed, extending known…
On current algebras, generalised fluxes and non-geometry
David Osten
A Hamiltonian formulation of the classical world-sheet theory in a generic, geometric or non-geometric, NSNS background is proposed. The essence of this formulation is a deformed c…
Generalised fluxes, Yang-Baxter deformations and the O(d,d) structure of non-abelian T-duality
Dieter Lust, David Osten
Based on the construction of Poisson-Lie T-dual -models from a common parent action we study a candidate for the non-abelian respectively Poisson-Lie T-duality group. This group…
Abelian Yang-Baxter Deformations and TsT transformations
David Osten, Stijn J. van Tongeren
We prove that abelian Yang-Baxter deformations of superstring coset sigma models are equivalent to sequences of commuting TsT transformations, meaning T dualities and coordinate sh…