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arXiv 1010.1776cond-mat.quant-gas
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超冷玻色气体中作为隧穿振幅探针的坍缩和回复振荡

Collapse and revival oscillations as a probe for the tunneling amplitude in an ultra-cold Bose gas

F. Alexander Wolf, Itay Hen, Marcos Rigol

摘要:

研究了物质波干涉在量子猝灭后的坍缩和恢复过程中,由于有限隧道效应对恢复时间的量子修正。本文用精确数值方法和平均场论研究了超晶格势和玻色-哈伯德模型中的硬核玻色子。我们认为系统没有和有一个捕获潜在的存在。我们表明,在超冷玻色子在光晶格中的实验中,对恢复时间的量子修正可以用来精确地确定跳跃参数的值。

英文摘要:

We present a theoretical study of the quantum corrections to the revival time due to finite tunneling in the collapse and revival of matter wave interference after a quantum quench. We study hard-core bosons in a superlattice potential and the Bose-Hubbard model by means of exact numerical approaches and mean-field theory. We consider systems without and with a trapping potential present. We show that the quantum corrections to the revival time can be used to accurately determine the value of the hopping parameter in experiments with ultracold bosons in optical lattices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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