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Par numéro 7 dans Communiqué le 8 Février 2023 à 17:25Physicists 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 — Quanta Magazine...
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Par numéro 7 dans Communiqué le 27 Janvier 2023 à 16:40Quantum 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 — Quanta Magazine...