Extended Bose—Hubbard model with pair hopping on triangular lattice

2013/02/06 by Yancheng Wang, Yan-Cheng Wang, Wan-Zhou Zhang +4 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Constraint (computer-aided design) #Hexagonal lattice #Lattice (music) #Phase diagram #Phase transition #Physics of Superconductivity and Magnetism #Quantum #Quantum many-body systems #Supersolid #cond-mat.quant-gas

paper · pdf · doi:10.1088/1674-1056/22/9/096702

published as Chin. Phys. B 22, 096702 (2013)

arxiv created 2013/02/06 · openalex publication_date 2013/09/01 · arxiv updated 2015/06/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We study systematically an extended Bose—Hubbard model on the triangular lattice by means of a meanfield method based on the Gutzwiller ansatz. Pair hopping terms are explicitly included and a three-body constraint is applied. The zero-temperature phase diagram and a variety of quantum phase transitions are investigated in great detail. In particular, we show the existence and the stability of the pair supersolid phase.

Citations

• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Many-body physics with ultracold gases
• Pair condensation of bosonic atoms induced by optical lattices
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Supersolids versus Phase Separation in Two-Dimensional Lattice Bosons
• Emerging Bosons with Three-Body Interactions from Spin-1 Atoms in Optical Lattices
• Ultracold quantum gases in triangular optical lattices
• Radiative Corrections as the Origin of Spontaneous Symmetry Breaking

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