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The potential applications of Bose-Einstein condensated is discussed here, I was wondering whether anyone could produce a similar argument for Superfluids and Mott insulators.

EDIT: I fully realise they are different effects, I am just asking about them in the same question because they are both novel states of matter.

In short: Is there any piece of equipment, process or phenomenon whose efficiency, stability or accuracy would be greatly enhanced by a superfluid? Or by a Mott insulator?

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  • $\begingroup$ Why should the applications of a superfluids be the same as the application of a Mott insulator ? Beyond, this question is a bit misleading, since you ask of the application of a concept. It's like if you were asking of the potential applications of the concept of liquid ... it's too broad concept to be easy to answer you. In addition note that a Bose-Einstein condensate is just one illustration of the concept of superfluid, so partly your question is answered in the link you provide... As for Mott insulator, do you know example in Nature of them ? $\endgroup$ – FraSchelle Nov 2 '15 at 10:00
  • $\begingroup$ Well it's very expensive to cool a liquid down to superfluid temepratures, are there any positive outcomes of doing so? Would this ease / increase the efficiency of another process? No, I don't know of any Mott insulators in nature. $\endgroup$ – SuperCiocia Nov 6 '15 at 18:00
  • $\begingroup$ Well, it's sure it's mot energetically efficient to observe superfluidity, but this the same problem with any experiment I fear. As any new kind of state of matter, superfluidity has interest, more certainly more in terms of fundamental research than in terms of economically efficient applications. I'm pretty sure superfluids have been used in spacecrafts and artificial satellites, since they can be at the heart of really efficient detectors (of rotation) for instance. This is also the historically first discovery of a macroscopic quantum state of matter. $\endgroup$ – FraSchelle Nov 8 '15 at 19:52
  • $\begingroup$ Some people believe SF can be toy model for the early universe as well. But these examples are in the area of fundamental research still. Please refine your question in order one could answer it. If your question is : will a daily-life object use superfluidity some days soon ? the answer is clearly no. Also, please do not mix the concepts of Mott insulator and superfluidity in your question. So -- one more time -- please refine the concept of what you call "practical", and why you are mixing the concepts of Mott insulator and superfluidity. I do not see any connection between the two concepts $\endgroup$ – FraSchelle Nov 8 '15 at 19:58
  • $\begingroup$ There's no connection in so far as they are both new states of matter that arise at low temperatures. $\endgroup$ – SuperCiocia Nov 8 '15 at 22:35
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Superfluid helium finds an application as a coolant in superconducting systems (http://link.springer.com/chapter/10.1007%2F3-540-45542-6_4#page-1 )

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