A long-simmering disagreement over the universe’s present-day expansion rate shows no signs of resolution, leaving experts ...

A standard time crystal is a new phase of matter that features perpetual motion without expending energy. According to Chong Zu, an assistant professor of physics at Washington University in St ...

Researchers discovered that phasons, a type of low-temperature quasiparticle found in crystal lattices, allow interlayer excitons to move, even at temperatures where motion is expected to stop. This ...