布朗惯性转子系统中的相分离
Phase Separation in a system of Brownian inertial rotors
- Università degli Studi di Bari（巴里大学）
- INFN, Sezione di Bari（意大利国家核物理研究所巴里分部）
- CY Cergy Paris Université（塞吉-蓬图瓦兹巴黎大学）
- CNRS UMR 8089（法国国家科学研究中心8089联合研究实验室）
- Universitat de Barcelona（巴塞罗那大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本研究通过数值模拟发现，受恒定力矩驱动的惯性哑铃系统因惯性效应出现液-六角相分离，并伴随团簇自发刚性旋转。
AI中文摘要：
我们揭示了一个由恒定施加力矩驱动、持续旋转并破坏手征对称性的惯性哑铃系统中所涌现的相分离现象，该系统通过排斥性硬核相互作用彼此耦合。我们数值确定了该模型的相图，表明存在一个双节点区域和一个旋节线区域，在该区域内系统分离为致密液体相和一个有序相，我们将其识别为六角相。对系统压力的分析揭示，相分离背后的机制主要受惯性控制。局部注入的动能以依赖于密度的方式稳定地存储于系统中，并且在惯性较大时，导致形成热稀薄态和冷致密态，从而产生普遍不稳定的均匀相。哑铃排列成团簇与手征力之间的相互作用，导致团簇绕其质心产生自发的刚性旋转。
英文摘要：
We uncover an emergent phase separation in a system of inertial dumbbells put into persistent rotation by a constant applied torque, breaking chiral symmetry, while interacting with each other through repulsive hard-core interactions. We numerically determine the phase diagram of the model, showing that there exists a binodal and a spinodal region where the system separates into a dense liquid and an ordered phase, which we identify as hexatic. An analysis of the system pressure unveils that the mechanism underlying the phase separation is heavily controlled by inertia. Locally injected kinetic energy is steadily stored into the system in a way that depends on density and that, at large inertia, results in a hot dilute and cool dense state, leading to a generically unstable homogeneous phase. The interplay between dumbbells' arrangement into clusters and chiral forces produces a spontaneous rigid rotation of the clusters around their centers of mass.
