Feb 20, 2024

Study finds quantum state of a rotating superfluid can discharge in three ways

Posted by in category: quantum physics

According to a recent study from the University of Helsinki, published in the journal Physical Review Letters, a vortex of a superfluid that has been quantized four times has three ways of dividing, depending on the temperature.

The fluid transforms into a near the absolute zero point of (approximately −273°C). Internal resisting forces, such as friction, disappear. At this point, the behavior of the fluid can no longer be described using ; instead, quantum physics must be applied.

When a superfluid is spun, the resulting rotation should never slow down because superfluids have no viscosity or friction. This has been experimented with at the using helium at very slow rotation, and it was observed that the superfluid, however, eventually halted.

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