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KdV charges in $T\bar{T}$ theories and new models with super-Hagedorn behavior

Authors
  • Le Floch, Bruno
  • Mezei, Márk
Publication Date
Jul 18, 2019
Source
HAL-INRIA
Keywords
Language
English
License
Unknown
External links

Abstract

Two-dimensional CFTs and integrable models have an infinite set of conserved KdV higher spin currents. These currents can be argued to remain conserved under the $T\bar{T}$ deformation and its generalizations. We determine the flow equations the KdV charges obey under the $T\bar{T}$ deformation: they behave as probes "riding the Burgers flow" of the energy eigenvalues. We also study a Lorentz-breaking $T_{s+1}\bar{T}$ deformation built from a KdV current and the stress tensor, and find a super-Hagedorn growth of the density of states.

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