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What is the Shape of a Black Hole?

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

2 Pith papers citing it
abstract

A brief, and certainly not exhaustive, survey is provided of some recent results and conjectures in four and higher spacetime dimensions, such as the Hoop Conjecture, relating the geometry of event horizons to dynamical quantities such as the total energy or mass of the spacetime containng the black hole. As a measure of the size of a hoop one may take Birkhoff's invariant based on sweepouts by circles or higher dimensional analogues or one may take the length of the shortest non-trivial closed geodesic. Also discussed are whether one can hear the shape of a black hole and to what extent one may associate with it a volume.

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gr-qc 1 hep-th 1

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2026 1 2016 1

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representative citing papers

The Role of the Volume in Black Hole Thermodynamics

gr-qc · 2026-06-29 · unverdicted · novelty 4.0

Adapting Barnich-Compère conserved charges, the first law requires unvarying components for both the Killing vector and AdS background (true for E's ξ but not F's β), while V_C enters the β-Smarr relation due to simplifications from the principal conformal Killing-Yano tensor.

Black hole chemistry: thermodynamics with Lambda

hep-th · 2016-08-22 · accept · novelty 3.0

Treating the cosmological constant as pressure in black hole thermodynamics yields an extended dictionary with enthalpy, thermodynamic volume, and chemical-like phase transitions including Van der Waals behavior, reentrant transitions, and triple points.

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  • Black hole chemistry: thermodynamics with Lambda hep-th · 2016-08-22 · accept · none · ref 94 · internal anchor

    Treating the cosmological constant as pressure in black hole thermodynamics yields an extended dictionary with enthalpy, thermodynamic volume, and chemical-like phase transitions including Van der Waals behavior, reentrant transitions, and triple points.