Global Existence and Scattering for Einstein’s equations and related equations satisfying the weak null condition
Speaker: Hans Lindblad (Johns Hopkins University) Title: Global Existence and Scattering for Einstein's equations and related equations satisfying the weak null condition Abstract: Einstein's equations in harmonic or wave coordinates are a system of nonlinear wave equations for a Lorentzian metric, that in addition satisfy the preserved wave coordinate condition. Christodoulou-Klainerman proved global existence for Einstein vacuum equations for […]
Noncommutative Analysis, Computational Complexity, and Quantum Information
CMSA 20 Garden Street, Cambridge, MA, United StatesOn October 16-18, 2019 the CMSA hosted a workshop on Noncommutative Analysis, Computational Complexity, and Quantum Information. This workshop focuses on linking three different rapidly developing areas: noncommutative real algebraic geometry (RAG), theory of computation and quantum information theory. This mix of overlapping but independently developing topics should lead to a stimulating flow of tools and important […]
Monogamy of entanglement and convex geometry
CMSA 20 Garden Street, Cambridge, MA, United StatesSpeaker: Aram Harrow (MIT) Title: Monogamy of entanglement and convex geometry Abstract: The SoS (sum of squares) hierarchy is a flexible algorithm that can be used to optimize polynomials and to test whether a quantum state is entangled or separable. (Remarkably, these two problems are nearly isomorphic.) These questions lie at the boundary of P, NP and the unique games […]