Supersolids versus phase separation in two-dimensional lattice bosons

We study the nature of the ground state of the two-dimensional extended boson Hubbard model on a square lattice by quantum Monte Carlo methods. We demonstrate that strong but finite on-site interaction U along with a comparable nearest-neighbor repulsion V result in a thermodynamically stable supers...

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Veröffentlicht in:	Physical review letters 2005-05, Vol.94 (20), p.207202.1-207202.4, Article 207202
Hauptverfasser:	SENGUPTA, Pinaki, PRYADKO, Leonid P, ALET, Fabien, TROYER, Matthias, SCHMID, Guido
Format:	Artikel
Sprache:	eng
Schlagworte:	Classical and quantum physics: mechanics and fields Condensed Matter Exact sciences and technology Matter waves Other Physics
Online-Zugang:	Volltext
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