T T-deformed 2D quantum eld theories

By Andrea Cavagli, R. Tateo, V. P. Giuria. 2016

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Towards a 2d QFT analog of the SYK model (2017, background): “10), indicates that the leading order correction to the IR conformal field theory takes the form of an irrelevant T T̄ deformation, given by the product of the left- and right-moving stress tensors [29, 30, 31, 32].”
TT¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ T\overline{T} $$\end{document} -deformations in closed form (2018, background): “We remark that the link between the Burgers’ equation and the T T̄ -deformed action was already observed in [12], where the appearance of its characteristic curve was rebuilt from the assumption of validity of the non-linear integral equation for the theory.”
An integrable Lorentz-breaking deformation of two-dimensional CFTs (2017, background): “A particularly interesting deformation in this class is the T T̄ deformation [1,5], built from the components of the stress tensor, which can be defined also for arbitrary twodimensional QFTs and for which the finite-size spectrum and thermodynamic equation of state have been obtained exactly at fin”