aqora

Exploring a geometry-induced phase transition from a superfluid to Mott insulating state in a tunable superlattice

Jennie Guzman, Gyu-Boong Jo, Claire Thomas +3 more

Bulletin of the American Physical SocietyJun 8, 20120 citations

Superfluid-Mott-Insulator Phase Transition Phases of Bosons in an and Collective Fluctuations in both Optical Lattice

朱瑞

Chinese Physics LettersJan 1, 20070 citations

Superfluid–Mott-insulator transition of dipolar bosons in an optical lattice

Zhengwei Xie, Weixi Liu

The superfluid--Mott-insulator phase transition of dipolar bosons in optical lattice is analyzed. By using the Bogoliubov approach and decoupling approximation, the energy spectrum and zero-temperature phase diagram of dipolar bosonic atoms in an optical lattice are obtained analytically. The results show that in these systems the superfluid--Mott-insulator phase transition can be induced by tuning the dipole-dipole interaction and the position of the phase boundary can be moved when the on-site interaction is varied. Corresponding to a large on-site interaction, the dipole-dipole interaction is attractive near the critical point of the superfluid--Mott-insulator phase transition.The superfluid--Mott-insulator phase transition of dipolar bosons in optical lattice is analyzed. By using the Bogoliubov approach and decoupling approximation, the energy spectrum and zero-temperature phase diagram of dipolar bosonic atoms in an optical lattice are obtained analytically. The results show that in these systems the superfluid--Mott-insulator phase transition can be induced by tuning the dipole-dipole interaction and the position of the phase boundary can be moved when the on-site interaction is varied. Corresponding to a large on-site interaction, the dipole-dipole interaction is attractive near the critical point of the superfluid--Mott-insulator phase transition.

Physical Review AOct 22, 200430 citations

Mott Insulator to Superfluid transition with two component bosons

Barbara Capogrosso-Sansone, Marco Guglielmino, Vittorio Penna

Bulletin of the American Physical SocietyMar 15, 20100 citations

Mott insulator to superfluid transition of ultracold bosons in an optical lattice near a Feshbach resonance

K. Sengupta, N. Dupuis

We study the phase diagram of ultracold bosons in an optical lattice near a Feshbach resonance. Depending on the boson density, the strength of the optical-lattice potential and the detuning from resonance, the ground state can be a Mott insulator, a superfluid phase with both an atomic and a molecular condensate, or a superfluid phase with only a molecular condensate. Mott insulator to superfluid transitions can be induced either by decreasing the strength of the optical-lattice potential or by varying the detuning from the Feshbach resonance. Quite generally, we find that for a commensurate density the ground state may undergo several insulator-superfluid or superfluid-insulator transitions as the magnetic field is varied through the resonance.We study the phase diagram of ultracold bosons in an optical lattice near a Feshbach resonance. Depending on the boson density, the strength of the optical-lattice potential and the detuning from resonance, the ground state can be a Mott insulator, a superfluid phase with both an atomic and a molecular condensate, or a superfluid phase with only a molecular condensate. Mott insulator to superfluid transitions can be induced either by decreasing the strength of the optical-lattice potential or by varying the detuning from the Feshbach resonance. Quite generally, we find that for a commensurate density the ground state may undergo several insulator-superfluid or superfluid-insulator transitions as the magnetic field is varied through the resonance.

arXiv:cond-mat/0406396Europhysics Letters (EPL)Apr 26, 200523 citations

Superfluid to Mott insulator transition in one, two, and three dimensions

M. K�hl, Henning Moritz, T. St�ferle +2 more

arXiv:cond-mat/0404338Journal of Low Temperature PhysicsFeb 1, 200590 citations

Geometry-induced phase transition from a bosonic superfluid to a Mott insulator

Related papers

Geometry-induced phase transition from a bosonic superfluid to a Mott insulator

Related papers