On the 75th anniversary of quantum electrodynamics, @orzelc reflects on the parallel work that led to the synthesis of the theory. https://t.co/zmvsR31FVf How many famous physicists can you recognize in this photo? pic.twitter.com/3F31kQxDsw — Nature...
Lire la suitePhysicists disagree about which possible shapes of space-time to include in a formula called the gravitational path integral. A “Euclidean” version of the formula helped Stephen Hawking argue that time did not exist before the Big Bang. https://t.co/5rNZ2AeWHj...
Lire la suiteQuantum physicists recently placed particles of light in a superposition of time flowing from the future to the past and vice versa. Researchers are debating whether the “quantum time flip” is real or simulated. @walkingthedot reports: https://t.co/Q5X0BvVcSP...
Lire la suite