Causal sets can approximate black hole horizons via discrete timelike curves and ladders tracing null geodesics, with a discrete expansion changing sign across the horizon in a 1+1D toy model.
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Dynamical evolution of Schwarzschild black holes produces new interior singularities absent in the static case, with resolution imposing highly restrictive conditions on gravitational collapse.
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Towards black-hole horizons and geodesic focusing in causal sets
Causal sets can approximate black hole horizons via discrete timelike curves and ladders tracing null geodesics, with a discrete expansion changing sign across the horizon in a 1+1D toy model.
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Interior Dynamics of Regular Schwarzschild Black Holes
Dynamical evolution of Schwarzschild black holes produces new interior singularities absent in the static case, with resolution imposing highly restrictive conditions on gravitational collapse.
- Renormalization-group improved Schwarzschild black hole: shadow, ringdown, and strong cosmic censorship