Density fluctuations of a hard-core Bose gas in a one-dimensional lattice near the Mott insulating phase
Density fluctuations of a hard-core Bose gas in a one-dimensional lattice near the Mott insulating phase
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DOI：
10.1103/physreva.71.061601
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发表时间：
2004-08
影响因子：
2.9
通讯作者：
C. Ates;C. Moseley;K. Ziegler
中科院分区：
文献类型：
--
作者：
C. Ates;C. Moseley;K. Ziegler
研究了一维格点中硬核玻色气体密度-密度关联函数的特征振荡及其结构因子。它们的波长发散的系统经历了一个连续的过渡，从一个不相称的莫特绝缘相。该转变与单位静态结构因子和消失声速相关联。在弱限制势作用下，系统的定性图象没有变化。
The characteristic oscillations of the density-density correlation function and the resulting structure factor are studied for a hard-core Bose gas in a one-dimensional lattice. Their wavelength diverges as the system undergoes a continuous transition from an incommensurate to a Mott insulating phase. The transition is associated with a unit static structure factor and a vanishing sound velocity. The qualitative picture is unchanged when a weak confining potential is applied to the system.