KdV charges in TTbar theories and new models with super-Hagedorn behavior

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: the...

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Main Author: Bruno Le Floch, Márk Mezei
Format: Article
Language:English
Published: SciPost 2019-10-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.7.4.043
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author Bruno Le Floch, Márk Mezei
author_facet Bruno Le Floch, Márk Mezei
author_sort Bruno Le Floch, Márk Mezei
collection DOAJ
description 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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spelling doaj.art-a49e6eff4f1b41b59f4cdd26fc5ba3c72022-12-22T02:05:24ZengSciPostSciPost Physics2542-46532019-10-017404310.21468/SciPostPhys.7.4.043KdV charges in TTbar theories and new models with super-Hagedorn behaviorBruno Le Floch, Márk MezeiTwo-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.https://scipost.org/SciPostPhys.7.4.043
spellingShingle Bruno Le Floch, Márk Mezei
KdV charges in TTbar theories and new models with super-Hagedorn behavior
SciPost Physics
title KdV charges in TTbar theories and new models with super-Hagedorn behavior
title_full KdV charges in TTbar theories and new models with super-Hagedorn behavior
title_fullStr KdV charges in TTbar theories and new models with super-Hagedorn behavior
title_full_unstemmed KdV charges in TTbar theories and new models with super-Hagedorn behavior
title_short KdV charges in TTbar theories and new models with super-Hagedorn behavior
title_sort kdv charges in ttbar theories and new models with super hagedorn behavior
url https://scipost.org/SciPostPhys.7.4.043
work_keys_str_mv AT brunoleflochmarkmezei kdvchargesinttbartheoriesandnewmodelswithsuperhagedornbehavior