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Daniel Kapec

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Event Series General Relativity Seminar

An analogue of non-interacting quantum field theory in Riemannian signature

CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

General Relativity Seminar Speaker: Mikhail Molodyk, Stanford Title: An analogue of non-interacting quantum field theory in Riemannian signature Abstract: Recent advances using microlocal tools have led to constructions, for wave operators on various classes of spacetimes, of four distinguished Fredholm inverses which have the singular behavior required of retarded, advanced, Feynman, and anti-Feynman propagators in QFT. Vasy […]

Event Series General Relativity Seminar

The Einstein-Euler system with a physical vacuum boundary in spherical symmetry

CMSA Room G10 CMSA, 20 Garden Street, Cambridge, MA, United States

General Relativity Seminar Speaker: Marcelo Disconzi, Vanderbilt University Title: The Einstein-Euler system with a physical vacuum boundary in spherical symmetry Abstract: We establish local well-posedness for the Einstein-Euler system with a physical vacuum boundary in spherical symmetry. Our proof relies on a new way of thinking about Einstein’s equations in spherical symmetry that is well-adapted to […]