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Juan Maldacena: Geometry as Entanglement, and the Emergence of Spacetime

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Juan Maldacena wrote the most cited paper in theoretical physics, birthing AdS/CFT and realizing holography. Today, the problem he’s working on is related to wormholes.

We cover:

  • Whether ER equals EPR is a literal identity

  • DESI’s hint that dark energy may be time-varying, and why Maldacena says w less than minus one would be “the biggest news in the last hundred years”

  • When you put one observer with a clock inside the universe, the de Sitter partition function goes from imaginary to real-positive. Basically, the observer is what gives geometry something to count. We need observers for quantum gravity to work.

  • The quantum extremal surface, the Page curve, and the island formula as one variational principle that resolves Hawking’s information paradox.

  • Maldacena calling himself “a dinosaur” on AI, and what he is doing about it: a current follow-up project with Alfredo Guevara to a recent Strominger paper that used GPT to derive a new gluon amplitude formula.

  • And what it means that the architect…

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