paper

deformation in SCFTs and integrable supersymmetric theories

arXiv:2011.07618 · doi:10.1007/JHEP09(2021)082

Abstract

We calculate the -multiplets for two-dimensional Euclidean and superconformal field theories under the deformation at leading order of perturbation theory in the deformation coupling. Then, from these deformed multiplets, we calculate two- and three-point correlators. We show the chiral ring's elements do not flow under the deformation. Specializing to integrable supersymmetric seed theories, such as Landau-Ginzburg models, we use the thermodynamic Bethe ansatz to study the S-matrices and ground state energies. From both an S-matrix perspective and Melzer's folding prescription, we show that the deformed ground state energy obeys the inviscid Burgers' equation. Finally, we show that several indices independent of -term perturbations including the Witten index, Cecotti-Fendley-Intriligator-Vafa index and elliptic genus do not flow under the deformation.

46 pages; v2 published version; v3 typos fixed

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