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arXiv 1402.2126cond-mat.quant-gascond-mat.stat-mechphysics.atom-ph
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有耗散的强相互作用Rydberg气体的非平衡结构

Out-of-equilibrium structures in strongly interacting Rydberg gases with dissipation

Igor Lesanovsky, Juan P. Garrahan

摘要:

研究了噪声存在下,里德伯态非共振激发的冷原子气体的非平衡动力学。相互作用和非共振激发之间的相互作用导致初始动力学,其中激发的里德伯原子的聚集体缓慢成核和生长,最终达到长寿命的亚稳态排列,然后在更长的时间尺度上进一步弛豫。这种增长动力学是由一个有效的主方程,允许一个透明的,主要是分析的基础物理的理解。通过大量的数值模拟,我们研究了多体动力学和由此产生的非平衡态在不同维度的相关性。我们的研究结果深入了解了噪音环境中强相互作用里德堡气体的动力学丰富性,并强调了此类系统对于探索软物质类型集体行为的有用性。

英文摘要:

The non-equilibrium dynamics of a gas of cold atoms in which Rydberg states are off-resonantly excited is studied in the presence of noise. The interplay between interaction and off-resonant excitation leads to an initial dynamics where aggregates of excited Rydberg atoms slowly nucleate and grow, eventually reaching long-lived meta-stable arrangements which then relax further on much longer timescales. This growth dynamics is governed by an effective Master equation which permits a transparent and largely analytical understanding of the underlying physics. By means of extensive numerical simulations we study the many-body dynamics and the correlations of the resulting non-equilibrium states in various dimensions. Our results provide insight into the dynamical richness of strongly interacting Rydberg gases in noisy environments, and highlight the usefulness of these kind of systems for the exploration of soft-matter-type collective behaviour.

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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