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Restricted Quantum Focusing

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arxiv 2212.03881 v2 pith:5YE4JZ7A submitted 2022-12-07 hep-th gr-qc

Restricted Quantum Focusing

classification hep-th gr-qc
keywords quantumfocusingconjecturegravityrestrictedanti-deargueassumption
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Quantum Focusing is a powerful conjecture, which plays a key role in the current proofs of many well-known quantum gravity theorems, including various consistency conditions, and causality constraints in AdS/CFT. I conjecture a (weaker) restricted quantum focusing, which I argue is sufficient to derive all known essential implications of quantum focusing. Subject to a technical assumption, I prove this conjecture on brane-world semiclassical gravity theories which are holographically dual to Einstein gravity in a higher dimensional anti-de Sitter spacetime.

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Cited by 6 Pith papers

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    Semiclassical quantum corrections in critical collapse yield a finite mass gap and transition from classical Type II to quantum Type I behavior, providing a quantum enforcement of weak cosmic censorship.

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    Universal compact entanglement islands are obstructed by an entropy bound violation, implying region-dependent interior reconstruction.

  3. A Quantum Weak Cosmic Censorship and Its Proof

    hep-th 2026-03 unverdicted novelty 6.0

    A quantum weak cosmic censorship principle is established, showing that singularities from hyperentropic regions must be hidden by generalized entropy to maintain thermodynamic consistency.

  4. Unveiling horizons in quantum critical collapse

    gr-qc 2025-09 unverdicted novelty 6.0

    Semiclassical one-loop analysis of solvable near-critical collapse solutions shows quantum corrections selecting a Boulware-like state and producing a growing mode that yields a finite mass gap and a transition to Typ...

  5. A Timelike Quantum Focusing Conjecture

    hep-th 2026-04 unverdicted novelty 5.0

    A timelike quantum focusing conjecture implies a complexity-based quantum strong energy condition and a complexity bound analogous to the covariant entropy bound for suitable codimension-0 field theory complexity measures.

  6. Modave lectures on energy conditions in quantum field theory and semi-classical gravity

    hep-th 2026-05 accept novelty 2.0

    Review of classical energy conditions, their quantum violations, and information-theoretic bounds for semi-classical gravity, based on Modave lectures.