Supersolids versus phase separation in two-dimensional lattice bosons

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dc.creatorSengupta, Pinaki
dc.creatorPryadko, Leonid P.
dc.creatorAlet, Fabien
dc.creatorTroyer, Matthias
dc.creatorSchmid, Guido
dc.date2004-12-14
dc.date.accessioned2026-07-07T03:02:40Z
dc.date.available2026-07-07T03:02:40Z
dc.descriptionWe study the nature of the ground state of the strongly-coupled two dimensional extended boson Hubbard model on a square lattice. We demonstrate that strong but finite on-site interaction U along with a comparable nearest-neighbor repulsion V result in a thermodynamically stable supersolid ground state just above half-filling, and that the checker-board crystal is unstable for smaller V, and for any V just below half-filling. The interplay between these two interaction energies results in a rich phase diagram which is studied in detail using quantum Monte Carlo methods.
dc.description4 p., 5 eps figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0412338
dc.identifierhttp://arxiv.org/abs/cond-mat/0412338
dc.identifierPhys. Rev. Lett. 94, 207202 (2005)
dc.identifierdoi:10.1103/PhysRevLett.94.207202
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25475
dc.subjectStrongly Correlated Electrons
dc.titleSupersolids versus phase separation in two-dimensional lattice bosons
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