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Seminars
Integrable deformations of non-linear σ-models and their supergravity realizations
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Europe/Athens
Description
In this talk, I will discuss my recent contributions to integrable deformations of two-dimensional non-linear σ-models and their relation to supergravity in ten dimensions. In particular, I will describe the construction of two supersymmetric solutions of type-II supergravity based on the λ-deformed σ-models for SL(2,R) and SU(2). In the absence of deformation, these solutions describe near-horizon limits of NS1 and NS5 brane intersections and both are 1/2-supersymmetric. When the deformation is turned on, supersymmetry breaks by half and both backgrounds preserve 8 supercharges. Toward the end of the talk, I will focus on a variation of the λ-model which was proposed recently. This relies on the deformation of only a subgroup F of the full symmetry group G. The requirement of Lax integrability imposes that the coset G/F must be symmetric.
Videoconference via https://us02web.zoom.us/j/89546327086
