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Integrable deformations of AdS3 x S3 x M4 strings

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In this talk we will explore integrable deformations of the GxG/G_0 supercoset sigma model that plays a role in the Green-Schwarz formulation of superstrings on AdS3 x S3 x T4 (G = PSU ) and AdS3 x S3 x S3 x S1 (G = D(2,1;α)). After reviewing the single parameter deformation of Delduc, Magro and Vicedo, which treats the two copies of G symmetrically, the main focus of the talk will be the construction of an asymmetric two-parameter deformation based on Κlimčík’s bi-Yang-Baxter sigma model. Some evidence will also be presented for the existence of a three-parameter deformation. Various interesting limits (including the squashed three-sphere, the Pohlmeyer-reduced theory and the mirror model) of the corresponding deformed metrics will be analyzed and the issue of whether these models describe deformations of superstrings will be briefly discussed.

This talk is part of the Quantum Fields and Strings Seminars series.

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