Novel Quantum Phases of Ultracold Bosonic Atoms in Honeycomb Optical Lattice

被引：0
|
作者：
Lu Qing-Qing [1 ]
Hou Jing-Min [1 ]
机构：
[1] Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2010年 / 53卷 / 05期
关键词：
honeycomb optical lattice; quantum phase transition; ultracold atoms; BOSE-EINSTEIN CONDENSATION; GAS; TRANSITION;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the quantum phase transition of ultracold atoms in the honeycomb optical lattice. The Hamiltonian of ultracold bosonic atoms in the honeycomb optical lattice is derived. We take the mean-field approximation and further solve the Hamiltonian with the numerical diagonalization method. We obtain the phase diagram and find that the Mott-insulator (MI), density wave (DW) and modulated superfluid (MS) phases appear. Furthermore, the phase diagram is analyzed according to the order parameter and the average number of particles.
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页码：861 / 863
页数：3
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