Browse Physics

What looks like supersolidity in helium could actually be the result of changes in helium’s elasticity, according to theory.

Two proposed experiments may allow measurement of how much entanglement is present in a many-body quantum system.

The explanation for why helium doesn’t solidify at low temperatures may be more complicated than previously thought.

A novel measurement of the Casimir force may help settle a long-standing debate over how to deal with a certain type of vacuum fluctuation.

Colliding matter waves from a Bose-Einstein condensate violate a relation called the Cauchy-Schwarz inequality, proving that such interactions must be considered quantum mechanically.

An optomechanical system in which light and matter exchange roles promises new kinds of quantum states.

Majorana’s geometrical representation of quantum spin as points on a sphere offers an intuitive approach to understanding quantum systems with multiple components.

Variations in density in an ultracold gas reveal sound waves of quantum origin.