The effect of particle overtaking on transport in a narrow channel is studied using a 1d model of a driven tracer in a quiescent bath. In contrast with the well-studied non-driven case, where the tracer's long-time dynamics is diffusive whenever overtaking is allowed, the driven tracer is shown to retain the hallmark single-file, sub-diffusive behavior for finite overtaking rates. Beyond a critical rate, the model exhibits a non-equilibrium phase transition from single-file to ballistic transport. The tracer velocity and the bath density profile are studied in both the single-file and ballistic phases, demonstrating the distinct features of these phases.

中文翻译：

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一维驱动示踪剂模型中的相变

使用静止浴中驱动示踪剂的一维模型研究了粒子超车对狭窄通道中传输的影响。与经过充分研究的非驱动情况相比，在允许超车时，示踪剂的长期动态是扩散的，驱动示踪剂显示为保留有限超车率的标志性单列、子扩散行为。超过临界速率，该模型表现出从单列到弹道传输的非平衡相变。在单列和弹道阶段研究了示踪剂速度和熔池密度分布，证明了这些阶段的独特特征。