English

Integrable asymmetric $\lambda$-deformations

High Energy Physics - Theory 2019-05-01 v1

Abstract

We construct integrable deformations of the λ\lambda-type for asymmetrically gauged WZW models. This is achieved by a modification of the Sfetsos gauging procedure to account for a possible automorphism that is allowed in G/GG/G models. We verify classical integrability, derive the one-loop beta function for the deformation parameter and give the construction of integrable D-brane configurations in these models. As an application, we detail the case of the λ\lambda-deformation of the cigar geometry corresponding to the axial gauged SL(2,R)/U(1)SL(2,R)/U(1) theory at large kk. Here we also exhibit a range of both A-type and B-type integrability preserving D-brane configurations.

Keywords

Cite

@article{arxiv.1902.04142,
  title  = {Integrable asymmetric $\lambda$-deformations},
  author = {Sibylle Driezen and Alexander Sevrin and Daniel C. Thompson},
  journal= {arXiv preprint arXiv:1902.04142},
  year   = {2019}
}

Comments

25 pages, 1 figure

R2 v1 2026-06-23T07:38:10.020Z