Revealing the superfluid-Mott-insulator transition in an optical lattice

被引：155
|
作者：
Kashurnikov, VA [1 ]
Prokof'ev, NV
Svistunov, BV
机构：
[1] Moscow Engn Phys Inst, Moscow 115409, Russia
[2] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA
[3] Russian Res Ctr, Kurchatov Inst, Moscow 123182, Russia
来源：
PHYSICAL REVIEW A | 2002年 / 66卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevA.66.031601
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study (by an exact numerical scheme) the single-particle density matrix of similar to10(3) ultracold atoms in an optical lattice with a parabolic confining potential. Our simulation is directly relevant to the interpretation and further development of the recent pioneering experiment by Greiner , Nature, (London) 415, 39 (2002). In particular, we show that restructuring of the spatial distribution of the superfluid component when a domain of Mott-insulator phase appears in the system, results in a fine structure of the particle momentum distribution. This feature may be used to locate the point of the superfluid-Mott-insulator transition.
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页数：4
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