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Variational Approach for the Bose--Hubbard Model |
| YU De-Shui;CHEN Jing-Biao |
| Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871 |
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| Cite this article: |
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YU De-Shui, CHEN Jing-Biao 2008 Chin. Phys. Lett. 25 1792-1794 |
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Abstract The phase diagram of the one-dimensional Bose--Hubbard model describing interacting bosons in optical lattice is investigated with the variational approach. This method can also be generalized to the two-dimensional case.
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| Keywords:
67.40.Db
32.80.Pj
03.75.Lm
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Received: 19 December 2007
Published: 29 April 2008
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| PACS: |
67.40.Db
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32.80.Pj
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03.75.Lm
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(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
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