Butterflies in $\textrm{T}\overline{\textrm{T}}$ deformed anomalous CFT$_2$

Fuente: arXiv
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Main Authors: Basu, Debarshi, Xu, Mingshuai
Format: Preprint
Published: 2026
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author Basu, Debarshi
Xu, Mingshuai
author_facet Basu, Debarshi
Xu, Mingshuai
contents We study quantum chaos in $\textrm{T}\overline{\textrm{T}}$-deformed two-dimensional conformal field theories with gravitational anomaly and their holographic dual description in topologically massive gravity. Using pole-skipping and shock-wave analysis, we extract the Lyapunov exponent and butterfly velocity and analyze the interplay between irrelevant deformation and parity-violating dynamics. We find that the chaos bound remains saturated, while the butterfly velocity exhibits nontrivial dependence on the deformation parameter and anomaly. We also identify a Hagedorn regime in which the chaotic response becomes complex valued, signaling a breakdown of the physical branch of the deformed theory.
format Preprint
id arxiv_https___arxiv_org_abs_2605_12616
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Butterflies in $\textrm{T}\overline{\textrm{T}}$ deformed anomalous CFT$_2$
Basu, Debarshi
Xu, Mingshuai
High Energy Physics - Theory
We study quantum chaos in $\textrm{T}\overline{\textrm{T}}$-deformed two-dimensional conformal field theories with gravitational anomaly and their holographic dual description in topologically massive gravity. Using pole-skipping and shock-wave analysis, we extract the Lyapunov exponent and butterfly velocity and analyze the interplay between irrelevant deformation and parity-violating dynamics. We find that the chaos bound remains saturated, while the butterfly velocity exhibits nontrivial dependence on the deformation parameter and anomaly. We also identify a Hagedorn regime in which the chaotic response becomes complex valued, signaling a breakdown of the physical branch of the deformed theory.
title Butterflies in $\textrm{T}\overline{\textrm{T}}$ deformed anomalous CFT$_2$
topic High Energy Physics - Theory
url https://arxiv.org/abs/2605.12616