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Superfluid to Bose-Glass transition in a 1D weakly interacting Bose gas
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| Abstract |
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| We study the one-dimensional Bose gas in spatially correlated disorder at zero temperature, using an extended density-phase Bogoliubov method. We analyze, in particular, the decay of the one-body density matrix and the behavior of the Bogoliubov excitations across the phase boundary. We observe that the transition to the Bose-glass phase is marked by a power-law divergence of the density of states at low energy. A measure of the localization length displays a power-law energy dependence in both regions, with the exponent equal to -1 at the boundary. We draw the phase diagram of the superfluid-insulator transition in the limit of small interaction strength. | | |
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English
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Physical review letters. - New York, N.Y. | |
| Publication |
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New York, N.Y. : 2009
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0031-9007
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103:3(2009), 4 p.
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| Article Reference |
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030403
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000268088300003
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E-only publicatie
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