论文标题
在通用非重生混合物中旅行状态的鲁棒性
Robustness of travelling states in generic non-reciprocal mixtures
论文作者
论文摘要
违反牛顿第三定律的新出现的非互动相互作用在超平衡系统中普遍存在。与这种相互作用的混合物相分离的相位表现出行进状态，没有平衡。使用广泛的布朗动力学模拟，我们研究了此类行进状态在通用的非重生粒子系统中的存在和稳定性。通过改变广泛的参数，包括混合成分的骨料状态，扩散率，非股展度的程度，有效的空间维度和密度，我们确定行进状态确实存在于捕食者 - 捕集型制度以下，但仅在狭窄的参数空间区域中才能找到。我们的工作还阐明了当相关参数变化时旅行状态消失的物理机制，并且对一系列非平衡系统具有影响，包括非重新性相分离混合物，非平衡模式形成和捕食者捕食模型。
Emergent non-reciprocal interactions violating Newton's third law are widespread in out-of-equilibrium systems. Phase separating mixtures with such interactions exhibit travelling states with no equilibrium counterpart. Using extensive Brownian dynamics simulations, we investigate the existence and stability of such travelling states in a generic non-reciprocal particle system. By varying a broad range of parameters including aggregate state of mixture components, diffusivity, degree of non-reciprocity, effective spatial dimension and density, we determine that travelling states do exist below the predator-prey regime, but nonetheless are only found in a narrow region of the parameter space. Our work also sheds light on the physical mechanisms for the disappearance of travelling states when relevant parameters are being varied, and has implications for a range of non-equilibrium systems including non-reciprocal phase separating mixtures, non-equilibrium pattern formation and predator-prey models.
