Generic 2D Horndeski theories arise from dimensional reduction of d≥4 gravities, yielding a Birkhoff theorem for quasi-topological gravities where static spherically symmetric solutions satisfy g_tt g_rr = -1 and are determined algebraically.
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The apparent horizon shape is derived to second order for perturbed evaporating black holes, and an effective classical metric is obtained from quantum expectation values of the reconstructed spacetime.
A quantum weak cosmic censorship principle is established, showing that singularities from hyperentropic regions must be hidden by generalized entropy to maintain thermodynamic consistency.
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All $2D$ generalised dilaton theories from $d\geq 4$ gravities
Generic 2D Horndeski theories arise from dimensional reduction of d≥4 gravities, yielding a Birkhoff theorem for quasi-topological gravities where static spherically symmetric solutions satisfy g_tt g_rr = -1 and are determined algebraically.
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Quantum Field Theory of Black Hole Perturbations with Backreaction VI. Apparent Horizons, Quasi-Local Mass and Effective Classical Metrics
The apparent horizon shape is derived to second order for perturbed evaporating black holes, and an effective classical metric is obtained from quantum expectation values of the reconstructed spacetime.
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A Quantum Weak Cosmic Censorship and Its Proof
A quantum weak cosmic censorship principle is established, showing that singularities from hyperentropic regions must be hidden by generalized entropy to maintain thermodynamic consistency.