Superfluid helium behaves like black holes

A frictionless form of helium appears to follow the same counterintuitive ‘area law’ as black holes

superfluid helium

ENTANGLEMENT EDICT  Superfluid helium follows a bizarre rule of physics. The information in a system — entropy — increases with the surface area of the system not with the volume. In simulations of the superfluid, the entropy of atoms (blue) entangled with one another (green) increases with the surface area of the sphere of particles (gray).

Herdman et al/Nature Physics 2017

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