Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states
- 13 March 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 75 (3) , 033605
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.Keywords
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