261 citations · 444 across the 4 of their papers we have counts for
15 papers · 1 filter
Gravitating Opposites Attract
Robert Beig, Gary W. Gibbons, Richard M. Schoen
Generalizing previous work by two of us, we prove the non-existence of certain stationary configurations in General Relativity having a spatial reflection symmetry across a non-com…
Deformed General Relativity and Torsion
Gary W. Gibbons, Steffen Gielen
We argue that the natural framework for embedding the ideas of deformed, or doubly, special relativity (DSR) into a curved spacetime is a generalisation of Einstein-Cartan theory,…
Birkhoff's invariant and Thorne's Hoop Conjecture
G. W. Gibbons
I propose a sharp form of Thorne's hoop conjecture which relates Birkhoff's invariant for an outermost apparent horizon to its mass, . I prove the conje…
Stationary Metrics and Optical Zermelo-Randers-Finsler Geometry
G. W. Gibbons, C. A. R. Herdeiro, C. M. Warnick +1
We consider a triality between the Zermelo navigation problem, the geodesic flow on a Finslerian geometry of Randers type, and spacetimes in one dimension higher admitting a timeli…
Universal properties of the near-horizon optical geometry
G. W. Gibbons, C. M. Warnick
We make use of the fact that the optical geometry near a static non-degenerate Killing horizon is asymptotically hyperbolic to investigate universal features of black hole physics.…
Light-bending in Schwarzschild-de-Sitter: projective geometry of the optical metric
G. W. Gibbons, C. M. Warnick, M. C. Werner
We interpret the well known fact that the equations for light rays in the Kottler or Schwarzschild-de Sitter metric are independent of the cosmological constant in terms of the pro…