On dual description of the OSp(N|2m) sigma models

by Mikhail Alfimov (HSE University, LPI RAS and NRNU MEPhI)

Monday 24 Feb 2020, 13:15 → 14:15 Europe/Stockholm

132:028 (Nordita East)

We propose a system of fermionic screening fields depending on a continuous parameter $b$, which defines $\eta$-deformed $OSp(n|2m)$ sigma-model in the limit $b\rightarrow\infty$ and a super-renormalizable QFT in $b\rightarrow0$. In the sigma-model regime  we show that leading UV asymptotic of the one-loop RG group flow equations coincides with perturbation around Gaussian theory. In perturbative regime $b\rightarrow0$ we show that the tree level two-particle scattering matrix matches the expansion of the trigonometric $OSp(n|2m)$ $R$-matrix.