Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states
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.
- Publication:
-
Physical Review A
- Pub Date:
- March 2007
- DOI:
- arXiv:
- arXiv:cond-mat/0611522
- Bibcode:
- 2007PhRvA..75c3605M
- Keywords:
-
- 03.75.Lm;
- 02.70.-c;
- 75.40.Mg;
- 03.67.-a;
- Tunneling Josephson effect Bose-Einstein condensates in periodic potentials solitons vortices and topological excitations;
- Computational techniques;
- simulations;
- Numerical simulation studies;
- Quantum information;
- Condensed Matter - Other Condensed Matter;
- Quantum Physics
- E-Print:
- 9 pages, 9 figures