Abstract
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.
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Alfimov, M., Feigin, B., Hoare, B. et al. Dual description of η-deformed OSP sigma models. J. High Energ. Phys. 2020, 40 (2020). https://doi.org/10.1007/JHEP12(2020)040
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DOI: https://doi.org/10.1007/JHEP12(2020)040