Type-II backgrounds from deformed coset CFTs

TL;DR

This paper constructs numerous type-II supergravity solutions with AdS geometries from integrable deformations of coset conformal field theories, exploring bounds on deformation parameters and T-duality limits.

Contribution

It introduces new supergravity backgrounds derived from deformed coset CFTs, including non-compact models, and analyzes their properties and T-duality limits.

Findings

Constructed supergravity solutions with AdS factors from deformed coset models.

Identified bounds on deformation parameters for reality of backgrounds.

Some solutions lack non-Abelian T-dual limits.

Abstract

We construct a plethora of type-II supergravity solutions featuring AdS factors in their geometries, derived from integrable deformations of coset CFTs. Specifically, we uplift the $\lambda$-deformed models of $SO(4)_k/SO(3)_k$ and $SO(5)_k/SO(4)_k$, including the non-compact version of the latter. Requiring reality for the backgrounds imposes bounds on the deformation parameter. As a result, some of the solutions do not admit non-Abelian T-dual limit.