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- W2020941948 abstract "We show that quantum solitons in the Lieb-Liniger Hamiltonian are precisely the yrast states. We identify such solutions with Lieb's type II excitations from weak to strong interactions, clarifying a long-standing question of the physical meaning of this excitation branch. We demonstrate that the metastable quantum phase transition previously found in mean-field analysis of the weakly interacting Lieb-Liniger Hamiltonian [Phys. Rev. A 79, 063616 (2009)] extends into the medium- to strongly interacting regime of a periodic one-dimensional Bose gas. Our methods are exact diagonalization, finite-size Bethe ansatz, and the boson-fermion mapping in the Tonks-Girardeau limit." @default.
- W2020941948 created "2016-06-24" @default.
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- W2020941948 date "2010-02-24" @default.
- W2020941948 modified "2023-09-30" @default.
- W2020941948 title "Metastable quantum phase transitions in a periodic one-dimensional Bose gas. II. Many-body theory" @default.
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- W2020941948 doi "https://doi.org/10.1103/physreva.81.023625" @default.
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