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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.
A proposal for building wormhole-connected black holes offers a way to probe the paradoxes of quantum information.
The theoretical physicist Joe Polchinski, who died February 2, left a tremendous professional and personal legacy, says a friend and collaborator.
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.
Edward Witten reflects on the meaning of dualities in physics and math, emergent space-time, and the pursuit of a complete description of nature.
One of the world’s preeminent theoretical physicists seeks a quiet place to think.