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Nonlinear stability of self-gravitating matter under low decay and weak regularity conditions

Applied Math and Analysis
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Tuesday, January 28, 2020
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3:15 pm - 4:15 pm
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Philippe G. LeFloch (Sorbonne University, CNRS)
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Applied Math And Analysis Seminar

I will present recent progress on the global evolution problem for self-gravitating matter. (1) For Einstein's constraint equations, motivated by a scheme proposed by Carlotto and Schoen I will show the existence of asymptotically Euclidean Einstein spaces with low decay; joint work with T. Nguyen. (2) For Einstein's evolution equations in the regime near Minkowski spacetime, I will show the global nonlinear stability of massive matter fields; joint work with Y. Ma. (3) For the colliding gravitational wave problem, I will show the existence of weakly regular spacetimes containing geometric singularities across which junction conditions are imposed; joint work with B. Le Floch and G. Veneziano.