The Yang-Baxter deformations of the (bosonic) AdS3xS3 string will be classified and shown to correspond, via a field redefinition, to marginal current-current deformations of the WZW-model.

Poisson-Lie T-duality was originally introduced to identify

the dynamics of closed strings probing different target spaces. But nowadays it also has become a crucial ingredient in the construction of integrable, two-dimensional sigma-models. After reviewing this intriguing connection from a worldsheet perspective, I will switch to the target space. There we are going to see that Poisson-Lie...

We discuss some recent developments in the duality between gauge fields and strings. In particular, focusing on conformal field theories in diverse dimensions and with different amounts of supersymmetry, we comment on their string duals, the calculation of various physical observables and the possibility of finding classical integrability on the dual string wolrdsheet.

I will discuss some examples of deformations of 2d metrics under

RG flow. Based on on-going work with Ben Hoare and Nat Levine.

I will focus on integrable eta deformations of AdS superstrings with the deformation encoded in an operator R satisfying the modified classical Yang-Baxter deformation. Such R-matrices include those of Drinfel'd-Jimbo type, whose action is dictated by the choice of Dynkin diagram and associated Cartan-Weyl basis. Superalgebras admit inequivalent Dynkin diagrams and thus allow for different...

It is a known fact that the leading order low-energy effective action of string theory is symmetric under T-duality transformations (Buscher rules), and although these are such that geometric properties of solutions may change substantially they still preserve the Hawking temperature and entropy of black holes. The question naturally arises whether or not this holds when one includes...

In this talk, I will present the results for the computation of the spin-2 excitations for a class of N=2 supersymmetric solutions of type IIA supergravity found by Gaiotto and Maldacena. The mass spectrum of these excitations can be derived by solving a second order partial differential equation. In our work, we consider as specific exampkes the Abelian and non-Abelian T-dual versions of...

A well known gauging procedure allowed for the systematic construction of exact deformations of current algebra theories with large classes of them being integrable. We present a modification of this construction allowing for the determination of the anomalous dimension of arbitrary composite operators in these theories exactly in the deformation couplings. In our approach loop computations...

I will show how exceptional field theory (ExFT) can be used to construct supersymmetric AdS vacua of 10-/11-d SUGRA and their consistent truncations. I will focus on the class of infinitely-many supersymmetric AdS_7 vacua of massive IIA and AdS_6 vacua of IIB and show how ExFT immediately leads to the "minimal" consistent truncation around these vacua in which only the gravitational...

I will outline some recent progress in understanding classes of integrable deformations of strings relevant to e.g. the AdS_5 x S^5 superstring. These so-called eta and lambda-deformations exhibit a rich structure of Poisson-Lie symmetries and corresponding notions of Poisson-Lie and non-Abelian T-duality. I will explain how these symmetries become natural when harnessing the power of...