Quantum hydrodynamics

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Quantum hydrodynamics is the study of superfluidity. Some of the main subjects in quantum hydrodynamics are quantum turbulence, quantized vortices, first, second and third sound, and quantum solvents.

The most common studies are in liquid helium (He-3 and He-4), and of the interior of neutron stars. Many famous scientists have worked in quantum hydrodynamics, including Richard Feynman, Lev Landau, and Pyotr L. Kapitsa.