Bogoliubov depletion of the fragmented condensate in the bosonic flux ladder
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URI (for links/citations):
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.95.033622http://elib.sfu-kras.ru/handle/2311/70239
Author:
Andrey R. Kolovsky
Corporate Contributor:
Институт инженерной физики и радиоэлектроники
Кафедра теоретической физики и волновых явлений
Date:
2017-03Journal Name:
PHYSICAL REVIEW AJournal Quartile in Scopus:
Q1Journal Quartile in Web of Science:
Q1Bibliographic Citation:
Andrey R. Kolovsky. Bogoliubov depletion of the fragmented condensate in the bosonic flux ladder [Текст] / Andrey R. Kolovsky // PHYSICAL REVIEW A. — 2017. — Т. 95. — С. 033622-p1-033622-p8Abstract:
We theoretically analyze the ground state of weakly interacting bosons in the flux ladder—the system that has been recently realized by means of ultracold atoms in the specially designed optical lattice [M. Atala, M. Aidelsburger, M. Lohse, J. T. Barreiro, B. Paredes, and I. Bloch, Nat. Phys. 10, 588 (2014)]. It is argued that, for the system parameters corresponding to two degenerate minima in the Bloch dispersion relation, the ground state is a fragmented condensate. We study the Bogoliubov depletion of this condensate and discuss the role of boundary conditions.