Is the density of a bec larger or smaller than the air?

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    Air Bec Density
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SUMMARY

The density of a Bose-Einstein Condensate (BEC) can vary significantly depending on the specific type of BEC being discussed. For instance, liquid Helium-4 (He4) is classified as a BEC and possesses a density greater than that of air. Conversely, atomic gas BECs typically exhibit densities that are lower than air due to their ultra-high vacuum conditions and minimal atom counts. Therefore, the comparison of BEC density to air is context-dependent and varies based on the specific BEC in question.

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is there any anyone doing experiments?
 
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BEC experiments are done in ultra-high vacuum and a BEC contain a very small number of atoms.

So the density is extremely small.
 
wdlang said:
is there any anyone doing experiments?

This question is a bit puzzling. For example, would you consider liquid He4 a "BEC" condensate? I would say that that BEC has a density larger than air.

On the other hand, as f95toli has mentioned you can also get it less than air in many of these atomic gas BEC.

So the question is like asking if "gasses" have smaller or larger density than air. The answer: it depends on the gas! The same applies here.

Zz.
 

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