Analysis Applied Math Physics Seminar - "Geometric inequalities for axisymmetric black holes"

Speaker : Hari Kunduri - Memorial University of Newfoundland

Hari's research interests are in mathematical physics, specifically general relativity and related problems in Riemannian geometry.

Abstract: In general relativity, isolated, dynamical black holes arise from asymptotically flat initial data for the Einstein equations. Such data are characterized by invariants such as the ADM mass and angular momentum. When angular momentum is conserved in the evolution, the standard picture of gravitational collapse suggests an inequality relating the ADM mass and angular momentum.  Such  geometric inequalities have been rigorously proved for axisymmetric, asymptotically flat maximal initial data for the vacuum Einstein equations. I will discuss recent work on extending this class of inequalities to higher dimensions, where a number of qualitative differences arise (e.g. black holes can have non-spherical horizon topology).  In particular, I will discuss how a lower bound for the mass, in terms of a (regularized) harmonic energy functional is obtained.

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Lectures, Seminars

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