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Nonlocal pair correlations in Lieb-Liniger gases: A unified nonperturbative approach from weak degeneracy to high temperatures

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Geiger, Benjamin ; Hummel, Quirin ; Urbina, Juan Diego ; Richter, Klaus

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Date of publication of this fulltext: 19 Jun 2018 11:58


We present analytical results for the nonlocal pair correlations in one-dimensional bosonic systems with repulsive contact interactions that are uniformly valid from the classical regime of high temperatures down to weak quantum degeneracy entering the regime of ultralow temperatures. By using the information contained in the short-time approximations of the full many-body propagator, we derive ...


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