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arXiv · 1610.08957

Bogoliubov depletion of the fragmented condensate in the bosonic flux ladder

Andrey R. Kolovsky
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Abstract

We theoretically analyze the ground state of weakly interacting bosons in the flux ladder -- the system that has been recently realized by means of ultacold atoms in the specially designed optical lattice [M. Atala, et al., Nat. Phys. 10, 588 (2014)]. It is argued that, for the system parameters corresponding to the so-called `vortex phase', the ground state is a fragmented condensate. We study the Bogoliubov depletion of this condensate and discuss the role of boundary conditions.

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Andrey R. Kolovsky. 2016-10-17. Bogoliubov depletion of the fragmented condensate in the bosonic flux ladder. https://doi.org/10.1103/physreva.95.033622

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