1203.1385 (Arya Dhar et al.)

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

Arya Dhar, Manpreet Singh, Ramesh V. Pai, B. P. Das

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.

View original: http://arxiv.org/abs/1203.1385