Superfluid phases of lattice bosons with ring-exchange interaction
We examine the superfluid phase of a hard-core boson model with nearest-neighbor
exchange J and four-particle ring-exchange K at half filling on the square lattice. At zero …
exchange J and four-particle ring-exchange K at half filling on the square lattice. At zero …
Superfluid phases of lattice bosons with ring-exchange interaction
R Schaffer, AA Burkov, RG Melko - Physical Review B, 2009 - ui.adsabs.harvard.edu
We examine the superfluid phase of a hard-core boson model with nearest-neighbor
exchange J and four-particle ring-exchange K at half filling on the square lattice. At zero …
exchange J and four-particle ring-exchange K at half filling on the square lattice. At zero …