Mean field analysis of quantum phase transitions in a periodic optical superlattice

Details Mean field analysis of quantum phase transitions in a periodic optical superlattice Mean field analysis of quantum phase transitions in a periodic optical superlattice

2012-03-07

arxiv.org/abs/1203.1385v1

Physical Review A 84, 033631 (2011)

Physics

Condensed Matter

Quantum Gases

6 pages, 7 figures, 4 tables

Scientific paper

10.1103/PhysRevA.84.033631

In this paper we analyze the various phases exhibited by a system of
ultracold bosons in a periodic optical superlattice using the mean field
decoupling approximation. We investigate for a wide range of commensurate and
incommensurate densities. We find the gapless superfluid phase, the gapped Mott
insulator phase, and gapped insulator phases with distinct density wave orders.

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