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- W2022921222 endingPage "30002" @default.
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- W2022921222 abstract "We use the density-matrix renormalization group method to investigate ground-state and dynamic properties of the one-dimensional Bose-Hubbard model, the effective model of ultracold bosonic atoms in an optical lattice. For fixed maximum site occupancy $n_b=5$, we calculate the phase boundaries between the Mott insulator and the `superfluid' phase for the lowest two Mott lobes. We extract the Tomonaga-Luttinger parameter from the density-density correlation function and determine accurately the critical interaction strength for the Mott transition. For both phases, we study the momentum distribution function in the homogeneous system, and the particle distribution and quasi-momentum distribution functions in a parabolic trap. With our zero-temperature method we determine the photoemission spectra in the Mott insulator and in the `superfluid' phase of the one-dimensional Bose-Hubbard model. In the insulator, the Mott gap separates the quasi-particle and quasi-hole dispersions. In the `superfluid' phase the spectral weight is concentrated around zero momentum." @default.
- W2022921222 created "2016-06-24" @default.
- W2022921222 creator A5031250931 @default.
- W2022921222 creator A5056729987 @default.
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- W2022921222 date "2011-02-01" @default.
- W2022921222 modified "2023-09-26" @default.
- W2022921222 title "Dynamic properties of the one-dimensional Bose-Hubbard model" @default.
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- W2022921222 doi "https://doi.org/10.1209/0295-5075/93/30002" @default.
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