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spacetime Laplace equation on initial data sets for Einstein’s equations
This talk will consider a ’spacetime Laplace operator’ on an initial data set for the Einstein equations. This operator reflects the geometry of the underlying manifold in a manner similar to the Dirac operator appearing in Witten’s proof of the Positive Mass Theorem. By analyzing linear-growth spacetime harmonic functions and their level sets, we obtain a rather approachable refinement of the Positive Mass Theorem for asymptotically flat 3-dimensional initial data sets. Applications to asymptotically hyperbolic initial data sets are also considered. The work I will discuss includes collaborations with Hugh Bray, Sven Hirsch, Marcus Khuri, Daniel Stern, and Yiyue Zhang.
- Category: Geometry and Topology,Uploaded Videos
- Duration: 01:05:22
- Date: February 22, 2021 at 8:36 PM
- Views: 483
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