30 citations · 56 across the 9 of their papers we have counts for
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math.DG2023★ 1 cited
Boundary rigidity, and non-rigidity, of projective structures
Jack Borthwick, Niky Kamran
We investigate the property of boundary rigidity for the projective structures associated to torsion-free affine connections on connected analytic manifolds with boundary. We show…
gr-qc2023★ 2 cited
Peeling at extreme black hole horizons
Jack Borthwick, Eric Gourgoulhon, Jean-Philippe Nicolas
The starting point of this work was an intriguing similarity between the behaviour of fields near a degenerate horizon and near the infinity of an asymptotically flat spacetime, as…