Corpus ID: 225103250

# $T{\overline T}$ deformations and the width of fundamental particles

@article{Cardy2020ToverlineTD,
title={\$T\{\overline T\}\$ deformations and the width of fundamental particles},
author={John L. Cardy and Benjamin Doyon},
journal={arXiv: High Energy Physics - Theory},
year={2020}
}
• Published 29 October 2020
• Physics
• arXiv: High Energy Physics - Theory
We provide a simple geometric meaning for deformations of so-called $T{\overline T}$ type in relativistic and non-relativistic systems. Deformations by the cross products of energy and momentum currents in integrable quantum field theories are known to modify the thermodynamic Bethe ansatz equations by a "CDD factor". In turn, CDD factors may be interpreted as additional, fixed shifts incurred in scattering processes: a finite width added to the fundamental particles (or, if negative, to the… Expand
3 Citations

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