Dual description of ηdeformed OSP sigma models
Abstract
We study the dual description of the ηdeformed OSP(N2m) sigma model in the asymptotically free regime (N > 2m + 2). Compared to the case of classical Lie groups, for supergroups there are inequivalent ηdeformations 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 ηdeformed OSP(N2m) 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 ηdeformed model coincides with a perturbed Gaussian theory. In the perturbative regime b → 0 we show that the treelevel twoparticle scattering matrix matches the expansion of the trigonometric OSP(N2m) Smatrix.
 Publication:

Journal of High Energy Physics
 Pub Date:
 December 2020
 DOI:
 10.1007/JHEP12(2020)040
 arXiv:
 arXiv:2010.11927
 Bibcode:
 2020JHEP...12..040A
 Keywords:

 Integrable Field Theories;
 Sigma Models;
 High Energy Physics  Theory;
 Mathematical Physics
 EPrint:
 46 pages, 16 figures