论文标题
部分可观测时空混沌系统的无模型预测
Entropons as collective excitations in active solids
论文作者
论文摘要
固体的振动动力学是通过构成平衡晶体中基本集体激发的声子来描述的。在这里，我们考虑了由自螺旋体颗粒组成的活性晶体，该晶体将系统带入受熵产生控制的非平衡稳态。计算熵生产谱，我们提出了“熵”的图片，这些图片是负责熵生产的振动集体激发。 entropon纯粹是由活动产生的，并与声子共存，但在它们上占据主导地位，以实现巨大的自我刺激强度。可以在密集的自proded胶体janus粒子和颗粒状活性物质以及诸如密集的细胞单层的生存系统（例如密集的细胞单层）的实验中验证entropons的存在。
The vibrational dynamics of solids is described by phonons constituting basic collective excitations in equilibrium crystals. Here we consider an active crystal composed of self-propelled particles which bring the system into a non-equilibrium steady-state governed by entropy production. Calculating the entropy production spectrum, we put forward the picture of "entropons", which are vibrational collective excitations responsible for entropy production. Entropons are purely generated by activity and coexist with phonons but dominate over them for large self-propulsion strength. The existence of entropons can be verified in experiments on dense self-propelled colloidal Janus-particles and granular active matter, as well as in living systems such as dense cell monolayers.
