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Dual description of η-deformed OSP sigma models

Alfimov, Mikhail; Feigin, Boris; Hoare, Ben; Litvinov, Alexey

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Mikhail Alfimov

Boris Feigin

Alexey Litvinov


We study the dual description of the η-deformed OSP(N|2m) sigma model in the asymptotically free regime (N > 2m + 2). Compared to the case of classical Lie groups, for supergroups there are inequivalent η-deformations corresponding to different choices of simple roots. For a class of such deformations we propose the system of screening charges depending on a continuous parameter b, which defines the η-deformed OSP(N|2m) sigma model in the limit b → ∞ and a certain Toda QFT as b → 0. In the sigma model regime we show that the leading UV asymptotic of the η-deformed model coincides with a perturbed Gaussian theory. In the perturbative regime b → 0 we show that the tree-level two-particle scattering matrix matches the expansion of the trigonometric OSP(N|2m) S-matrix.


Alfimov, M., Feigin, B., Hoare, B., & Litvinov, A. (2020). Dual description of η-deformed OSP sigma models. Journal of High Energy Physics, 2020(12), Article 40.

Journal Article Type Article
Acceptance Date Nov 17, 2020
Online Publication Date Dec 7, 2020
Publication Date 2020-12
Deposit Date Jan 1, 2021
Publicly Available Date Apr 13, 2021
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2020
Issue 12
Article Number 40
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Copyright Statement
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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