T T ¯ $$ \mathrm{T}\overline{\mathrm{T}} $$ -deformed 2D quantum field theories
Istituto Nazionale di Fisica Nucleare, Sezione di Torino · University of Turin · +7 more institutions
Abstract
It was noticed many years ago, in the framework of massless RG flows, that the irrelevant composite operator $$ \mathrm{T}\overline{\mathrm{T}} $$ , 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 discuss how it affects the energy levels and one-point functions of a general 2D QFT in finite volume through a surprising relation with a simple hydrodynamic equation. In the case of the…
Citation impact
- FWCI
- 48.53
- Percentile
- 100%
- References
- 76
Authors
4- ACAndrea CavagliàCorresponding
Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin
- SNStefano Negro
Centre National de la Recherche Scientifique, École Normale Supérieure - PSL, Sorbonne Université, École Normale Supérieure, Laboratoire de Physique de l'Ecole Normale Supérieure, Laboratoire des Biomolécules
- IMIstván M. Szécsényi
Durham University
- RTRoberto Tateo
Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin
Topics & keywords
- Physics
- Mathematical physics
- Massless particle
- Boson
- Quantum field theory
- String theory
- Effective action
- Perturbation theory (quantum mechanics)
- Affordable and clean energy