Melting of discrete vortices via quantum fluctuations

We consider nonlinear boson states with a nontrivial phase structure in the three-site Bose-Hubbard ring, quantum discrete vortices (or q vortices), and study their "melting" under the action of quantum fluctuations. We calculate the spatial correlations in the ground states to show the su...

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Veröffentlicht in:	Physical review letters 2006-11, Vol.97 (18), p.180408-180408, Article 180408
Hauptverfasser:	Lee, Chaohong, Alexander, Tristram J, Kivshar, Yuri S
Format:	Artikel
Sprache:	eng
Schlagworte:	BOSONS BREAKDOWN CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS FLUCTUATIONS GROUND STATES MELTING NONLINEAR PROBLEMS QUANTUM MECHANICS SUPERFLUIDITY VARIATIONAL METHODS VORTICES
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