Extended supersolid phase of frustrated hard-core bosons on a triangular lattice
| dc.creator | Wang, Fa | |
| dc.creator | Pollmann, Frank | |
| dc.creator | Vishwanath, Ashvin | |
| dc.date | 2008-09-09 | |
| dc.date.accessioned | 2026-07-07T12:24:48Z | |
| dc.date.available | 2026-07-07T12:24:48Z | |
| dc.description | We study a model of hard-core bosons with frustrated nearest-neighbor hopping ($t$) and repulsion ($V$) on the triangular lattice. We argue for a supersolid ground state in the large repulsion ($V\gg|t|$) limit where a dimer representation applies, by constructing a unitary mapping to the well understood unfrustrated hopping case. This generalized 'Marshall sign rule' allows us to establish the precise nature of the supersolid order by utilizing a recently proposed dimer variational wavefunction, whose correlations can be efficiently calculated using the Grassman approach. By continuity, a supersolid is predicted over the wide parameter range, $V>-2t>0$. This also establishes a simple phase diagram for the triangular lattice spin 1/2 XXZ antiferromagnet. | |
| dc.description | 5 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0809.1667 | |
| dc.identifier | http://arxiv.org/abs/0809.1667 | |
| dc.identifier | Phys. Rev. Lett. 102, 017203 (2009) | |
| dc.identifier | doi:10.1103/PhysRevLett.102.017203 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214438 | |
| dc.subject | Statistical Mechanics | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Extended supersolid phase of frustrated hard-core bosons on a triangular lattice | |
| dc.type | text |