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Root-TT[over ¯] Deformations in Two-Dimensional Quantum Field Theories
Christian Ferko1, Alessandro Sfondrini2, Liam Smith3
1Center for Quantum Mathematics and Physics (QMAP), Department of Physics and Astronomy, University of California, Davis, California 95616, USA.
Abstract:
In this Letter, we introduce a one-parameter deformation of two-dimensional quantum field theories generated by a nonanalytic operator that we call Root-TT[over ¯]. For a conformal field theory, the operator coincides with the square root of the TT[over ¯] operator. More generally, the operator is defined so that classically it is marginal and generates a flow that commutes with the TT[over ¯] flow. Intriguingly, the Root-TT[over ¯] flow is closely related to the ModMax theory recently constructed by Bandos, Lechner, Sorokin, and Townsend.
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