Superfluid-Insulator Phase Transitions of the Extended Bose-Hubbard Model

被引：1
|
作者：
Su, Xiao Qiang [1 ]
Wang, An Min [2 ]
机构：
[1] Shanxi Normal Univ, Coll Phys & Informat Engn, Linfen 041004, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
来源：
CHINESE JOURNAL OF PHYSICS | 2012年 / 50卷 / 03期
基金：
中国国家自然科学基金;
关键词：
NEAR-NEIGHBOR REPULSION; OPTICAL LATTICE; ANTIFERROMAGNETISM; ATOMS;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, the extended Bose-Hubbard model with nearest neighbor interaction is discussed using the method of Green functions in the mean-field approximation. Starting from the two-sublattice approach developed by Hewson and ter Haar, we solve the equations of motion of the Green functions and obtain the energy-band structure. Then, by taking the limit of a vanishing energy gap in the energy-band structure, we find the superfluid-insulator phase boundaries for an integer filling density. Finally, the ground state phase boundaries of the one-dimension extended Bose-Hubbard model for rho = 1 are presented, and the tricritical point is obtained.
引用
收藏
页码：500 / 507
页数：8
相关论文
共 50 条
  • [21] Properties of the superfluid in the disordered Bose-Hubbard model
    de Abreu, Bruno R.
    Ray, Ushnish
    Vitiello, Silvio A.
    Ceperley, David M.
    PHYSICAL REVIEW A, 2018, 98 (02)
  • [22] Quantum phase transitions of the Bose-Hubbard model inside a cavity
    Chen, Yu
    Yu, Zhenhua
    Zhai, Hui
    PHYSICAL REVIEW A, 2016, 93 (04)
  • [23] Artificial gauge fields for the Bose-Hubbard model on a checkerboard superlattice and extended Bose-Hubbard model
    Iskin, M.
    EUROPEAN PHYSICAL JOURNAL B, 2012, 85 (02):
  • [24] Monte Carlo study of superfluid-insulator transitions in Boson Hubbard models
    Hatano, Naomichi
    PHYSICA B-CONDENSED MATTER, 1995, 206 (1-4) : 157 - 159
  • [25] Artificial gauge fields for the Bose-Hubbard model on a checkerboard superlattice and extended Bose-Hubbard model
    M. Iskin
    The European Physical Journal B, 2012, 85
  • [26] Dynamics of first-order quantum phase transitions in extended Bose-Hubbard model: from density wave to superfluid and vice versa
    Shimizu, Keita
    Hirano, Takahiro
    Park, Jonghoon
    Kuno, Yoshihito
    Ichinose, Ikuo
    NEW JOURNAL OF PHYSICS, 2018, 20
  • [27] Thermal phase transitions in the attractive extended Bose-Hubbard model with three-body constraint
    Ng, Kwai-Kong
    Yang, Min-Fong
    PHYSICAL REVIEW B, 2011, 83 (10):
  • [28] Quantum phase transitions in the attractive extended Bose-Hubbard model with a three-body constraint
    Chen, Yung-Chung
    Ng, Kwai-Kong
    Yang, Min-Fong
    PHYSICAL REVIEW B, 2011, 84 (09):
  • [29] Helical superfluid in a frustrated honeycomb Bose-Hubbard model
    Hsieh, Tzu-Chi
    Ma, Han
    Radzihovsky, Leo
    PHYSICAL REVIEW A, 2022, 106 (02)
  • [30] Variational approach for the superfluid-insulator transition in the bosonic Hubbard model
    Becca, Federico
    Capello, Manuela
    PHYSICA B-CONDENSED MATTER, 2008, 403 (5-9) : 1293 - 1294
12345