Pith. sign in

REVIEW 11 cited by

von Neumann algebras in JT gravity

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2303.04701 v2 pith:TEA7ZKSW submitted 2023-03-08 hep-th math-phmath.MP

von Neumann algebras in JT gravity

classification hep-th math-phmath.MP
keywords gravityalgebraalgebrasmatterboundaryneumannrightanalogously
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
read the original abstract

We quantize JT gravity with matter on the spatial interval with two asymptotically AdS boundaries. We consider the von Neumann algebra generated by the right Hamiltonian and the gravitationally dressed matter operators on the right boundary. We prove that the commutant of this algebra is the analogously defined left boundary algebra and that both algebras are type II$_\infty$ factors. These algebras provide a precise notion of the entanglement wedge away from the semiclassical limit. We comment on how the factorization problem differs between pure JT gravity and JT gravity with matter.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 11 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Uniqueness of null-local modular flow

    hep-th 2026-07 conditional novelty 7.0

    For the free massless scalar in a Minkowski causal diamond, the vacuum is the unique state or weight in the vacuum sector whose modular flow is local on the null boundary.

  2. A de Sitter Anti-Scrambling Algebra

    hep-th 2026-07 conditional novelty 7.0

    In a toy model of de Sitter quantum gravity, shockwave time advances break the KMS condition and prevent the Hartle-Hawking state from being a trace on the observer's crossed-product algebra.

  3. q-Askey Deformations of Double-Scaled SYK

    hep-th 2026-05 unverdicted novelty 7.0

    q-Askey deformations of DSSYK produce transfer matrices from basic orthogonal polynomials whose chord numbers map to ER bridge lengths and signal geometric transitions with discrete spectra in sine dilaton gravity.

  4. q-Askey Deformations of Double-Scaled SYK

    hep-th 2026-05 unverdicted novelty 7.0

    q-Askey deformations of double-scaled SYK yield transfer matrices for orthogonal polynomials whose semiclassical chord dynamics map to ER bridges and new geometric transitions in sine dilaton gravity.

  5. Emergent States and Algebras from the Double-Scaling limit of Pure States in SYK

    hep-th 2026-04 unverdicted novelty 7.0

    In double-scaled SYK, state-adapted dressed chord operators change the emergent algebra from Type II1 to Type I∞ and restore purity of KM states, unlike generic operators.

  6. Wormholes as red herrings: reflection positivity and the reconstruction of unitary quantum field theories

    hep-th 2026-07 unverdicted novelty 6.0

    Unitary QFTs are determined up to unitary isomorphism by closed-manifold partition functions; every reflection-positive partition function comes from a unitary QFT, so spatial wormholes do not break Hilbert-space fact...

  7. Cosmological Entanglement Entropy from the von Neumann Algebra of Double-Scaled SYK & Its Connection with Krylov Complexity

    hep-th 2025-11 unverdicted novelty 6.0

    Algebraic entanglement entropy from type II1 algebras in double-scaled SYK is matched via triple-scaling limits to Ryu-Takayanagi areas in (A)dS2, reproducing Bekenstein-Hawking and Gibbons-Hawking formulas for specif...

  8. Single-Sided Black Holes in Double-Scaled SYK Model and No Man's Island

    hep-th 2025-11 unverdicted novelty 6.0

    In the double-scaled SYK model with an end-of-the-world brane, the boundary algebra for a single-sided black hole is a type II1 von Neumann factor with non-trivial commutant, preventing full bulk reconstruction and cr...

  9. Fiducial observers and the thermal atmosphere in the black hole quantum throat

    hep-th 2025-07 unverdicted novelty 6.0

    A semiclassical construction of fiducial observers in JT gravity, fixed by conformal isometry flow, is extended to the quantum regime to compute wormhole contributions yielding finite thermal entropy and a quantum des...

  10. Semiclassical algebraic reconstruction for type III algebras

    hep-th 2026-05 unverdicted novelty 5.0

    Semiclassical crossed product constructions extend the algebraic reconstruction theorem to type III algebras and yield an algebraic Ryu-Takayanagi formula for holographic duality.

  11. Finite cutoff JT gravity: Baby universes, Matrix dual, and (Krylov) Complexity

    hep-th 2025-02 unverdicted novelty 5.0

    Finite cutoff in JT gravity causes faster ERB-length saturation, deformation-dependent baby-universe emission only under Lorentzian evolution, and possible one-cut universality corrections in the matrix dual.