“This retroactive idea. It has to be that,” says Nobel Prize-winning mathematical physicist Sir Roger Penrose, reflecting on a problem about the building blocks of reality that has dogged physics for ...

A team of scientists recently conducted an exciting quantum physics experiment allowing them to demonstrate that reality might actually be real. Well, don’t everybody applaud all at once. It’s ...

The quantum physicists Sandu Popescu, Yakir Aharonov and Daniel Rohrlich have been troubled by the same scenario for three decades. It started when they wrote about a surprising wave phenomenon called ...

A photon was apparently detected in two places at once in a twist on the classic double-slit experiment, but many physicists ...

Quantum collapse models represent a class of theoretical modifications to standard quantum mechanics that seek to resolve the long‐standing measurement problem. They posit that the linear evolution of ...