1.4k citations · 5.5k across the 67 of their papers we have counts for
5 papers · 1 filter
Boundary Terms and Noether Current of Sphereical Black Holes
Michael C. Ashworth, Sean A. Hayward
We consider two proposals for defining black hole entropy in spherical symmetry, where the horizon is defined locally as a trapping horizon. The first case, boundary terms in a dua…
Dynamic black-hole entropy
Sean A. Hayward, Shinji Mukohyama, M. C. Ashworth
We consider two non-statistical definitions of entropy for dynamic (non-stationary) black holes in spherical symmetry. The first is analogous to the original Clausius definition of…
Inequalities relating area, energy, surface gravity and charge of black holes
Sean A. Hayward
The Penrose-Gibbons inequality for charged black holes is proved in spherical symmetry, assuming that outside the black hole there are no current sources, meaning that the charge e…
Dynamic wormholes
Sean A. Hayward
A new framework is proposed for general dynamic wormholes, unifying them with black holes. Both are generically defined locally by outer trapping horizons, temporal for wormholes a…
Relativistic thermodynamics
Sean A. Hayward
A generally relativistic theory of thermodynamics is developed, based on four main physical principles: heat is a local form of energy, therefore described by a thermal energy tens…