Abstract
Based on the construction of Poisson-Lie T -dual σ-models from a common parent action we study a candidate for the non-abelian respectively Poisson-Lie T -duality group. This group generalises the well-known abelian T -duality group O(d, d) and we explore some of its subgroups, namely factorised dualities, B- and β-shifts. The corresponding duality transformed σ-models are constructed and interpreted as generalised (non-geometric) flux backgrounds.
We also comment on generalisations of results and techniques known from abelian T -duality. This includes the Lie algebra cohomology interpretation of the corresponding non-geometric flux backgrounds, remarks on a double field theory based on non-abelian T -duality and an application to the investigation of Yang-Baxter deformations. This will show that homogeneously Yang-Baxter deformed σ-models are exactly the non-abelian T -duality β-shifts when applied to principal chiral models.
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Lüst, D., Osten, D. Generalised fluxes, Yang-Baxter deformations and the O(d,d) structure of non-abelian T -duality. J. High Energ. Phys. 2018, 165 (2018). https://doi.org/10.1007/JHEP05(2018)165
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DOI: https://doi.org/10.1007/JHEP05(2018)165