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An integrable Lorentz-breaking deformation of two-dimensional CFTs

9 Pith papers cite this work. Polarity classification is still indexing.

9 Pith papers citing it
abstract

It has been recently shown that the deformation of an arbitrary two-dimensional conformal field theory by the composite irrelevant operator $T \bar T$, built from the components of the stress tensor, is solvable; in particular, the finite-size spectrum of the deformed theory can be obtained from that of the original CFT through a universal formula. We study a similarly universal, Lorentz-breaking deformation of two-dimensional CFTs that posess a conserved $U(1)$ current, $J$. The deformation takes the schematic form $J \bar T$ and is interesting because it preserves an $SL(2,\mathbb{R}) \times U(1)$ subgroup of the original global conformal symmetries. For the case of a purely (anti)chiral current, we find the finite-size spectrum of the deformed theory and study its thermodynamic properties. We test our predictions in a simple example involving deformed free fermions.

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hep-th 9

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2026 8 2025 1

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representative citing papers

$J\bar{J}$-deformation as a Riemann bilinear dressing

hep-th · 2026-05-18 · unverdicted · novelty 7.0 · 2 refs

Reformulates J bar J deformation in CFTs as Riemann-bilinear operator dressing that preserves modular properties on Riemann surfaces and matches bare/renormalized perturbation theory.

Deformed BTZ Radiance and Single Trace $T\bar{T}$ Holography

hep-th · 2026-06-24 · accept · novelty 6.0

Long-string emission from rotating λ-deformed BTZ black holes forces a unique origin B-field that matches the value needed for the string spectrum to agree with the Z_w sector of single-trace T T-bar deformed orbifolds, with emission rates universally set by ΔS_BH.

Double-Current Deformations of Two-Dimensional QFTs with Anomalies

hep-th · 2026-06-08 · unverdicted · novelty 6.0 · 2 refs

Constructs anomaly-preserving double-current deformations of 2D QFTs via dynamical gauge and Stueckelberg fields, reducing to a holonomy integral kernel that yields a Gaussian transform for the compact boson partition function.

Correlators in $T\bar{T}$ and Root-$T\bar{T}$ Deformed CFTs

hep-th · 2026-04-16 · unverdicted · novelty 6.0

Deformed two-point correlators in mixed TbarT/root-TbarT CFTs admit an explicit kernel representation as weighted averages of undeformed CFT correlators over conformal dimensions, with the two-point function obtained to all orders in TbarT and leading order in root-TbarT.

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