Homogeneous Yang-Baxter deformations as generalized diffeomorphisms

Abstract

Yang-Baxter (YB) deformations of string sigma model provide deformed target spaces. We propose that homogeneous YB deformations always lead to a certain class of $\beta$-twisted backgrounds and represent the bosonic part of the supergravity fields in terms of the classical r-matrix associated with the YB deformation. We then show that various $\beta$-twisted backgrounds can be realized by considering generalized diffeomorphisms in the undeformed background. Our result extends the notable relation between the YB deformations and (non-commuting) TsT transformations. We also discuss more general deformations beyond the YB deformations.

8 pages; v2: typos corrected, clarifications added, references added

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Cited by in corpus (1)

• $T$-folds from Yang-Baxter deformations