About: U-duality is a research topic. Over the lifetime, 204 publications have been published within this topic receiving 16218 citations. The topic is also known as: unified duality.
TL;DR: In this article, the action and transformation laws of supergravity in 11 dimensions were presented, which is expected to be closely related to the O(8) theory in 4 dimensions after dimensional reduction.
TL;DR: In this paper, the SO(8) supergravity theory was derived by dimensional reduction of the super gravity theory in 11 dimensions to 4 dimensions, where the equations of motion are invariant under the global non-compact group E7(+7).
TL;DR: In this paper, it was shown that eleven-dimensional supergravity can be described by a non-linear realisation based on the group E_{11] and that the gravitational degrees of freedom are described by two fields which are related by duality.
Abstract: We argue that eleven dimensional supergravity can be described by a non-linear realisation based on the group E_{11}. This requires a formulation of eleven dimensional supergravity in which the gravitational degrees of freedom are described by two fields which are related by duality. We show the existence of such a description of gravity.
TL;DR: Double field theory (DFT) as discussed by the authors is a generalization of string theory that incorporates T-duality as a symmetry of a field theory defined on a double configuration space.
Abstract: Double field theory (DFT) is a proposal to incorporate T-duality, a distinctive symmetry of string theory, as a symmetry of a field theory defined on a double configuration space. The aim of this review is to provide a pedagogical presentation of DFT and its applications. We first introduce some basic ideas on T-duality and supergravity in order to proceed to the construction of generalized diffeomorphisms and an invariant action on the double space. Steps towards the construction of a geometry on the double space are discussed. We then address generalized Scherk–Schwarz compactifications of DFT and their connection to gauged supergravity and flux compactifications. We also discuss U-duality extensions and present a brief parcours on worldsheet approaches to DFT. Finally, we provide a summary of other developments and applications that are not discussed in detail in the review.
TL;DR: In this article, the global symmetries of the action can be affected by the choice of a subset of fields, which is called the GLA, D, E and GLB series.