In everyday life, all matter exists as either a gas, liquid, or solid. In quantum mechanics, however, it is possible for two ...

Stylolites—irregular seams that occur in limestone—have been found to affect how acoustic waves move through rock samples.

Caltech scientists have created a hybrid quantum memory that converts electrical information into sound, allowing quantum states to last 30 times longer than in standard superconducting systems. Their ...

Scientists have imaged heat traveling as a wave, called "second sound," in superfluid quantum gas. It may unlock mysteries of neutron stars and superconductors.