Over a decade ago, when I was first starting to pretend I could write about quantum mechanics, I covered a truly bizarre ...

For the first time, a team of physicists in Austria has carried out an experiment that appears to verify the principle of ...

The study of quantum gravity seeks a synthesis between quantum mechanics and general relativity, and Causal Dynamical Triangulations (CDT) has emerged as a promising nonperturbative approach. In CDT, ...

Physicists demonstrate indefinite causal order in quantum mechanics, challenging traditional cause-and-effect notions through ...

(via Sabine Hossenfelder) To us normal people, cause and effect are linked together in a distinct order. The cause occurs first, and the effect follows after. But according to a new paper, that causal ...

Causal Set Theory (CST) offers a compelling approach to reconciling quantum theory and general relativity by postulating that spacetime, at its most fundamental level, is discrete rather than ...

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The theoretical physicist John Wheeler once used the phrase “great smoky dragon” to describe a particle of light going from a source to a photon counter. “The mouth of the dragon is sharp, where it ...

As an ordinary reader trying to make sense of the universe before breakfast, I was delighted by your feature on quantum causality. The idea of “causal bubbles” gave me a way to picture the quantum ...