Possibility of a first-order superfluid-Mott-insulator transition of spinor bosons in an optical lattice.
Possibility of a first-order superfluid-Mott-insulator transition of spinor bosons in an optical lattice.
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DOI：
10.1103/physrevlett.94.110403
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发表时间：
2004-08
影响因子：
8.6
通讯作者：
T. Kimura;S. Tsuchiya;S. Kurihara
中科院分区：
文献类型：
--
作者：
T. Kimura;S. Tsuchiya;S. Kurihara
研究了玻色-哈伯德模型描述的光晶格中反铁磁自旋1玻色子的超流-莫特-绝缘体相变。我们的变分研究与Gutzwiller变分波函数确定的超流莫特绝缘体转变是一个一阶的相边界曲线的一部分，相反的情况下，无自旋。
We study the superfluid-Mott-insulator transition of antiferromagnetic spin-1 bosons in an optical lattice described by a Bose-Hubbard model. Our variational study with the Gutzwiller variational wave function determines that the superfluid-Mott-insulator transition is a first-order one at a part of the phase boundary curve, contrary to the spinless case.