13 citations · 76 across the 18 of their papers we have counts for
8 papers · 1 filter
Low regularity extensions beyond Cauchy horizons
Martin Lesourd, Ettore Minguzzi
We prove that if in a spacetime endowed with a merely continuous metric, a complete partial Cauchy hypersurface has nonempty Cauchy horizon, then the horizon is caused by the prese…
Topological censorship in spacetimes compatible with
Martin Lesourd, Eric Ling
Currently available topological censorship theorems are meant for gravitationally isolated black hole spacetimes with cosmological constant or . Here, we prove a topolog…
Observations and predictions from past lightcones
Martin Lesourd
In a general Lorentzian manifold M, the past lightcone of a point is a proper subset of M that does not carry enough information to determine the rest of M. That said, if M is a gl…
Null geodesic incompleteness of spacetimes with no CMC Cauchy surfaces
Madeleine Burkhart, Martin Lesourd, Daniel Pollack
Chruściel, Isenberg, and Pollack constructed a class of vacuum cosmological spacetimes that do not admit Cauchy surfaces with constant mean curvature. We prove that, for sufficient…
Cosmological singularities from high matter density without global topological assumptions
Martin Lesourd
Cosmological singularity theorems such as that of Hawking and Penrose assume local curvature conditions as well as global ones like the existence of a compact (achronal) slice. Her…
Causal structure of evaporating black holes
Martin Lesourd
We offer a mathematically rigorous basis for the widely held suspicion that full black hole evaporation is in tension with predictability. Based on conditions expressing the global…
A new singularity theorem for black holes which allows chronology violation in the interior
Martin Lesourd
The interior of the Kerr solution is singular and achronological. The classic singularity theorem by Hawking and Penrose relies on chronology, and thus does not apply to the Kerr s…
Hawking's area theorem with a weaker energy condition
Martin Lesourd
Hawking's area theorem is a fundamental result in black hole theory that is universally associated with the null energy condition. That this condition can be weakened is illustrate…