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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,

GENERAL: Novel Quantum Phases of Ultracold Bosonic Atoms in Honeycomb Optical Lattice  
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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
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