论文标题
磁性微晶状体表现出bose-einstein样冷凝
Magnetic microswimmers exhibit Bose-Einstein-like condensation
论文作者
论文摘要
我们研究了一个由微流体通道中限制的磁性微晶状体组成的活性物质系统，并表明它表现出一种新型的自组织行为。结合了分析技术和布朗动力学模拟，我们演示了非平衡活性，外部驾驶和磁相互作用的相互作用如何通过非平衡相变的非平衡相过渡，从而导致游泳者在通道中心的凝结，这种过渡正式与bose-innstein凝结相似。我们发现，可以将Microswimmers的有效动力学映射到扩散性 - 边缘问题上，并使用映射来构建广义的热力学框架，该框架通过与我们的模拟的无参数比较来验证。我们的工作揭示了驱动的活动物质如何具有与量子系统中观察到的那些特征相似的特征的外来经典非平衡阶段。
We study an active matter system comprised of magnetic microswimmers confined in a microfluidic channel and show that it exhibits a new type of self-organized behavior. Combining analytical techniques and Brownian dynamics simulations, we demonstrate how the interplay of non-equilibrium activity, external driving, and magnetic interactions leads to the condensation of swimmers at the center of the channel via a non-equilibrium phase transition that is formally akin to Bose-Einstein condensation. We find that the effective dynamics of the microswimmers can be mapped onto a diffusivity-edge problem, and use the mapping to build a generalized thermodynamic framework, which is verified by a parameter-free comparison with our simulations. Our work reveals how driven active matter has the potential to generate exotic classical non-equilibrium phases of matter with traits that are analogous to those observed in quantum systems.
