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There's always that one guy in the audience

Professor Suvrat Raju starts with a gentle introduction to quantum mechanics of black holes (gravity). #PAPS2025

Stephen Hawking was so good at computing path integrals in his head that someone gushed to Feynman about how impressive his feats were. Not quite as impressive as inventing path integrals, pointed out Feynman, who had invented path integrals.

took these shots on my sony a6400 🎞️

The Amplituhedron share.google/llFYl9fo5xvnlI…

the point of living is to do theoretical physics.

the cauchy problem in general relativity says otherwise.

wild to think that approximately 1% of the static on old television sets contains the glow leftover by radiation from the big bang.

This is why I prefer (-+++). Those who still use (+---) have to deal with this extra hassle in going to Euclidean singature. And you have to keep track of all the sign changes in the connections and curvature tensors

Actually, 100% is left over from the Big Bang

WRONG. The initial value problem in General Relativity admits unique (maximally extended globally hyperbolic) solutions. Open any book

me

there was a lady named bright, who could travel faster than light; she set out one day in a relative way, and returned the previous night.