Effective spin model for interband transport in a Wannier-Stark lattice system

被引：18

作者：

Ploetz, P. ^{[1
]}

Schlagheck, P. ^{[2
]}

Wimberger, S. ^{[1
]}

机构：

[1] Univ Heidelberg, Inst Theoret Phys, D-69120 Heidelberg, Germany

[2] Univ Liege, Dept Phys, B-4000 Liege, Belgium

来源：

EUROPEAN PHYSICAL JOURNAL D | 2011年 / 63卷 / 01期

关键词：

BOSE-EINSTEIN CONDENSATE; ULTRACOLD GASES; ENTANGLEMENT; QUANTUM; SUPERLATTICES; RESONANCES; DRIVEN; ATOMS;

D O I：

10.1140/epjd/e2010-10554-7

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that the interband dynamics in a tilted two-band Bose-Hubbard model can be reduced to an analytically accessible spin model in the case of resonant interband oscillations. This allows us to predict the revival time of these oscillations which decay and revive due to inter-particle interactions. The presented mapping onto the spin model and the so achieved reduction of complexity has interesting perspectives for future studies of many-body systems.

引用

页码：47 / 53

页数：7

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