Planar Black Holes and Entanglement Entropy in Analog Gravity Models
Abstract
Via constructing an explicit Lagrangian for which the perturbation equations are analogs of a scalar field propagating in a planar black-hole space-time, it is found that all planar black holes conformal to a Painlevé-Gullstrand-type line element can be realized as analog metrics. We also introduce the concept of holographic entanglement entropy for planar black-hole space-times. This is valid for an arbitrary choice of conformal and blackening factor, thereby vastly extending the number of known examples of explicitly known analog metrics.
Fields of Study & Subjects
Black Holes and Theoretical Physics
Cosmology and Gravitation Theories
Noncommutative and Quantum Gravity Theories
Publication details
- Journal / source
- Entropy
- Volume
- 28
- Issue
- 3
- Pages
- 345–345
- Publication date
- 19 March 2026
- Language
- EN