Root-T T Deformations in Two-Dimensional Quantum Field Theories
Abstract
In this letter we introduce a one-parameter deformation of two-dimensional quantum field theories generated by a non-analytic operator which we call Root-T T. For a conformal field theory, the operator coincides with the square-root of the T T operator. More generally, the operator is defined so that classically it is marginal and generates a flow which commutes with the T T-flow. Intriguingly, the Root-T T flow is closely related to the ModMax theory recently constructed by Bandos, Lechner, Sorokin and Townsend.
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