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New Math Proves That a Special Kind of Space-Time Is Unstable
Einstein’s equations describe three canonical configurations of space-time. Now one of these three — important in the study of quantum gravity — has been shown to be inherently unstable.
Wormholes Reveal a Way to Manipulate Black Hole Information in the Lab
A proposal for building wormhole-connected black holes offers a way to probe the paradoxes of quantum information.
Physicists Mourn Joe Polchinski, Developer of Deep Ideas and Paradoxes
The theoretical physicist Joe Polchinski, who died February 2, left a tremendous professional and personal legacy, says a friend and collaborator.
Why Is M-Theory the Leading Candidate for Theory of Everything?
The mother of all string theories passes a litmus test that, so far, no other candidate theory of quantum gravity has been able to match.
A Physicist’s Physicist Ponders the Nature of Reality
Edward Witten reflects on the meaning of dualities in physics and math, emergent space-time, and the pursuit of a complete description of nature.
Juan Maldacena, Pondering Quantum Gravity by the Pond
One of the world’s preeminent theoretical physicists seeks a quiet place to think.