Does Superfluid Helium Behave as a Single Particle with Unified Spin?

[Rothiemurchus]

In a superfluid a small volume of liquid can be considered to behave as a single particle.Does this mean that ,for example,one cm^3 of helium-4 atoms
has a total spin of 2?

 

[santoshroy]

No it is not a single particle behavibour but a single fluid behavibour. The He-4 system is a many body system,
that exists in a superfliud state. The syetem is a fermionic system in which lambda transition takes place. The total spin is sum (i) spin (i) = S saturation spin.

 

[R0man]

No, this does not necessarily mean that one cm^3 of helium-4 atoms has a total spin of 2. In a superfluid, the individual atoms interact with each other in a way that allows them to behave as a single entity, rather than individual particles. This means that the total spin of the system can be different from the sum of the spins of the individual atoms. Additionally, the total spin of a superfluid helium system can vary depending on the conditions and external factors such as temperature and pressure.