Bose-Hubbard model with attractive interactions and inhomogeneous lattice potential

被引：2

作者：

Khanore, Mukesh ^{[1
]}

Dey, Bishwajyoti ^{[1
]}

机构：

[1] Univ Pune, Dept Phys, Pune 411007, Maharashtra, India

来源：

SOLID STATE PHYSICS: PROCEEDINGS OF THE 58TH DAE SOLID STATE PHYSICS SYMPOSIUM 2013, PTS A & B | 2014年 / 1591卷

关键词：

Attractive Bose-Hubbard model; Double Well trap; exact diagonalization; ATOMS; GAS;

D O I：

10.1063/1.4872521

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We consider the Bose-Hubbard model of attractive Bose gas in an optical lattice potential and in an additional inhomogeneous double well magnetic trap potential. We calculate the energy spectrum and the on-site number fluctuation of the system using numerical exact diagonalization procedure. Our results shows very clearly the role played by the degenerate double well minimum of the trap potential on the nature of instability of the attractive Bose-Hubbard model and the phase-transition picture of the system.

引用

页码：139 / 141

页数：3

共 6 条

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