The Hayward metric is the simplest description of a black hole which is non-singular. The metric was written down by Sean Hayward as the minimal model which is regular, static, spherically symmetric and asymptotically flat.[1] The metric is not derived from any particular alternative theory of gravity, but provides a framework to test the formation and evaporation of non-singular black holes both within general relativity and beyond. Hayward first published his metric in 2005 and numerous papers have studied it since.[2][3][4][5]

Hayward, Sean A. (26 January 2006). "Formation and evaporation of non-singular black holes". Physical Review Letters. 96 (3).arXiv:gr-qc/0506126. doi:10.1103/PhysRevLett.96.031103.
De Lorenzo, Tommaso; Pacilio, Costantino; Rovelli, Carlo; Speziale, Simone (1 April 2015). "On the Effective Metric of a Planck Star". General Relativity and Gravitation. 47 (4).arXiv:1412.6015. doi:10.1007/s10714-015-1882-8.
Chiba, Takeshi; Kimura, Masashi (1 April 2017). "A Note on Geodesics in Hayward Metric". Progress of Theoretical and Experimental Physics. 2017 (4).arXiv:1701.04910. doi:10.1093/ptep/ptx037.
Contreras, E.; Bargueño, P. (20 October 2018). "Scale--dependent Hayward black hole and the generalized uncertainty principle". Modern Physics Letters A. 33 (32): 1850184.arXiv:1809.00785. doi:10.1142/S0217732318501845.

Frolov, Valeri P. (28 November 2016). "Notes on non-singular models of black holes". Physical Review D. 94 (10).arXiv:1609.01758. doi:10.1103/PhysRevD.94.104056.


Black holes

Schwarzschild Rotating Charged Virtual Kugelblitz Primordial Planck particle


Extremal Electron Stellar
Microquasar Intermediate-mass Supermassive
Active galactic nucleus Quasar Blazar


Stellar evolution Gravitational collapse Neutron star
Related links Tolman–Oppenheimer–Volkoff limit White dwarf
Related links Supernova
Related links Hypernova Gamma-ray burst Binary black hole


Gravitational singularity
Ring singularity Theorems Event horizon Photon sphere Innermost stable circular orbit Ergosphere
Penrose process Blandford–Znajek process Accretion disk Hawking radiation Gravitational lens Bondi accretion M–sigma relation Quasi-periodic oscillation Thermodynamics
Immirzi parameter Schwarzschild radius Spaghettification


Black hole complementarity Information paradox Cosmic censorship ER=EPR Final parsec problem Firewall (physics) Holographic principle No-hair theorem


Schwarzschild (Derivation) Kerr Reissner–Nordström Kerr–Newman Hayward


Nonsingular black hole models Black star Dark star Dark-energy star Gravastar Magnetospheric eternally collapsing object Planck star Q star Fuzzball


Optical black hole Sonic black hole


Black holes Most massive Nearest Quasars Microquasars


Black Hole Initiative Black hole starship Compact star Exotic star
Quark star Preon star Gamma-ray burst progenitors Gravity well Hypercompact stellar system Membrane paradigm Naked singularity Quasi-star Rossi X-ray Timing Explorer Timeline of black hole physics White hole Wormhole

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