Abstract
We have studied the system of hard-core bosons on a two-dimensional optical lattice using a variational algorithm based on projected entangled-pair states. We have investigated the ground-state properties of the system as well as the responses of the system to sudden changes in the parameters. We have compared our results to mean-field results based on a Gutzwiller ansatz.
2 More- Received 20 November 2006
DOI:https://doi.org/10.1103/PhysRevA.75.033605
©2007 American Physical Society