quantum fluids

Physicists have proposed a strange new state of matter: a liquid that can flow not only through space but also through time. The theoretical idea, reported by ScienceAlert, suggests a material whose dynamics behave like a fluid moving along the time dimension, a concept tied to ongoing research into exotic quantum states. Details of the underlying study remain limited in the coverage so far.

Researchers have derived correlations in a Fermi gas using hydrodynamic methods, according to a report in the physics press. The work applies fluid-dynamics techniques to describe the collective behaviour of interacting fermions, a topic of interest in quantum many-body physics. Details of the research team, publication venue and practical implications were not provided in the coverage.

Researchers report the observation of Kelvin waves — helical distortions that ripple along quantized vortices just nanometers wide in quantum fluids. The waves have long been proposed as a mechanism for how turbulence dissipates in superfluids, and confirming them directly closes a decades-old question in quantum turbulence research.