Bose-Einstein condensation in inhomogeneous Josephson arrays

Details Bose-Einstein condensation in inhomogeneous Josephson arrays Bose-Einstein condensation in inhomogeneous Josephson arrays

2000-04-06

arxiv.org/abs/cond-mat/0004100v2

Europhys. Lett., 52, 251 (2000)

Physics

Condensed Matter

4 pages, 5 figures

Scientific paper

10.1209/epl/i2000-00431-5

We show that spatial Bose-Einstein condensation of non-interacting bosons occurs in dimension d < 2 over discrete structures with inhomogeneous topology and with no need of external confining potentials. Josephson junction arrays provide a physical realization of this mechanism. The topological origin of the phenomenon may open the way to the engineering of quantum devices based on Bose-Einstein condensation. The comb array, which embodies all the relevant features of this effect, is studied in detail.

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