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Theory Group
Theory Group Seminar, 23 February 2021

Clifford Cheung, Caltech

From Scattering to the Dynamics of Black Holes and Fluids


The study of scattering amplitudes has uncovered extraordinary dualities linking real-world particles like gravitons, gluons, and pions. In this talk we describe recent progress exploring these structures in arenas less well-tread by particle physicists. First, we discuss how cutting edge ideas from amplitudes have been fused with classic tools from effective field theory to derive now state-of-the-art results on the orbital dynamics of binary black holes and neutron stars. Second, we show how the Navier-Stokes equation encodes scattering amplitudes of fluid quanta which are also amenable to amplitudes analysis and exhibit a litany of familiar structures, including soft theorems, recursion, and the double copy.

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