What is spacetime, exactly? And how does it impact our understanding of important phenomena in our universe?

According to Einstein’s theory of gravity, spacetime is both curved and dynamical. The theory had two surprising predictions: black holes and the expansion of the universe. In both cases, there are regions of spacetime that are outside the reach of the classical theory, the so-called “singularities.” To address them, we need a quantum mechanical description of spacetime.

Juan Maldacena studies black holes, string theory, and quantum field theory. In his July 27 Perimeter Public Lecture webcast, he described some ideas that arose from the study of quantum aspects of black holes. They involve an interesting connection between the basic description of quantum mechanics and the geometry of spacetime. He also delves into how wormholes are related to quantum entanglement.

Learn more about the Public Lecture here: https://insidetheperimeter.ca/the-mea...

Perimeter Institute (charitable registration number 88981 4323 RR0001) is the world’s largest independent research hub devoted to theoretical physics, created to foster breakthroughs in the fundamental understanding of our universe, from the smallest particles to the entire cosmos. Perimeter public events are made possible in part by the support of donors like you. Be part of the equation: https://perimeterinstitute.ca/inspiri...

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