# TT¯-deformed 2D quantum field theories

@article{Cavagli2016TTdeformed2Q, title={TT¯-deformed 2D quantum field theories}, author={Andrea Cavagli{\`a} and Stefano Negro and Istv'an M. Sz'ecs'enyi and Roberto Tateo}, journal={Journal of High Energy Physics}, year={2016}, volume={2016}, pages={112-160} }

It was noticed many years ago, in the framework of massless RG ﬂows, that the irrelevant composite operator T¯T, built with the components of the energy-momentum tensor, enjoys very special properties in 2D quantum ﬁeld theories, and can be regarded as a peculiar kind of integrable perturbation. Novel interesting features of this operator have recently emerged from the study of eﬀective string theory models. In this paper we study further properties of this distinguished perturbation. We…

## 217 Citations

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