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Mathematical Physics Seminar

On Singularity Formation in General Relativity

Xinliang An, University of Toronto

Location:  HILL 705
Date & time: Thursday, 05 October 2017 at 2:00PM - 3:00PM

Abstract:  In the process of gravitational collapse, singularities may form, which are either covered by trapped surfaces (black holes) or visible to faraway observers (naked singularities).  In this talk, with three different approaches coming from hyperbolic PDE, quasilinear elliptic PDE and dynamical system, I will provide answers for four physical questions: i) Can “black holes” form dynamically in vacuum? ii) To form a “black hole”, what is the least size of initial data? iii) Can we find the boundary of a “black hole” region? Can we show that a “black hole region” is emerging from a point? iv) For Einstein vacuum equations, could singularities other than black hole type form in gravitational collapse? 

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Department of Mathematics

Department of Mathematics
Rutgers University
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