Doubled aspects of generalised dualities and integrable deformations

Saskia Demulder, Falk Hassler, Daniel C. Thompson

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


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. Here we show how such ℰ-models can be given an elegant target space description within Double Field Theory by specifying explicitly generalised frame fields forming an algebra under the generalised Lie derivative. With this framework we can extract simple criteria for the R/R fields and the dilaton that extend the ℰ-model conditions to type II backgrounds. In particular this gives conditions for a type II background to be Poisson-Lie T-dualisable. Our approach gives rise to algebraic field equations for Poisson-Lie symmetric spacetimes and provides an effective tool for their study.

Original languageEnglish
Article number189
JournalJournal of High Energy Physics
Issue number2
StatePublished - 1 Feb 2019
Externally publishedYes


  • Flux compactifications
  • Space-Time Symmetries
  • String Duality

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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