While originally this phenomenon was discovered in liquid helium, it has found applications not only in the theory of liquid helium but also in astrophysics, high-energy physics and theories of quantum gravity.
The phenomenon is related to the Bose–Einstein condensation but not identical: not all Bose-Einstein condensates can be regarded as superfluids and not all superfluids are Bose–Einstein condensates.
- Macroscopic quantum phenomena
- Bose–Einstein condensate
- Superfluid helium-4
- Quantum hydrodynamics
- Superfluid vacuum
- Slow light