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Keywords
(6)
Mean Field Approximation
Mott Insulator
Optical Lattice
Order Parameter
Phase Diagram
Quantum Phase Transition
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GENERAL: Novel Quantum Phases of Ultracold Bosonic Atoms in Honeycomb Optical Lattice
GENERAL: Novel Quantum Phases of Ultracold Bosonic Atoms in Honeycomb Optical Lattice,10.1088/0253-6102/53/5/14,Communications in Theoretical Physics,
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GENERAL: Novel Quantum Phases of Ultracold Bosonic Atoms in Honeycomb Optical Lattice
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Qing-Qing Lu
,
Jing-Min Hou
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.
Journal:
Communications in Theoretical Physics - COMMUN THEOR PHYS
, vol. 53, no. 5, pp. 861-863, 2010
DOI:
10.1088/0253-6102/53/5/14
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