250 research outputs found
Localization of Bose-Einstein Condensation and Disappearance of Superfluidity of Strongly Correlated Bose Fluid in a Confined Potential
We develop a Bose fluid model in a confined potential to consider the new
quantum phase due to the localization of Bose-Einstein condensation and
disappearance of superfluidity which is recently observed in liquid 4He in
porous glass at high pressures. A critical pressure of the transition to this
phase can be defined by our new analytical criterion of supposing the size of
localized Bose-Einstein condensate becomes comparable to the scale of
confinement. The critical pressure is quantitatively consistent with
observations without free parameters.Comment: 2 pages, 1 figur
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