论文标题
部分可观测时空混沌系统的无模型预测
Pattern formation in odd viscoelastic fluids
论文作者
论文摘要
在粘弹力很重要的尺度上，可以在生物学和合成活性物质中发现局部能量消耗所促进的非转向互动相互作用。这样的系统可以用“奇数”粘弹性描述，该粘弹性比传统理论少的物质对称性。在这里，我们在分析上研究奇特的粘弹性，并使用晶格Boltzmann模拟。我们确定形式形成的不稳定性，产生了振荡的流体涡流阵列，并阐明了控制涡流的生长速率，波长和饱和度的特征。我们通过奇怪的机械响应对模式形成的观察可以为软活动系统中奇数动态的生物模式模型和指导工程提供信息。
Non-reciprocal interactions fueled by local energy consumption can be found in biological and synthetic active matter at scales where viscoelastic forces are important. Such systems can be described by "odd" viscoelasticity, which assumes fewer material symmetries than traditional theories. Here we study odd viscoelasticity analytically and using lattice Boltzmann simulations. We identify a pattern-forming instability which produces an oscillating array of fluid vortices, and we elucidate which features govern the growth rate, wavelength, and saturation of the vortices. Our observation of pattern formation through odd mechanical response can inform models of biological patterning and guide engineering of odd dynamics in soft active matter systems.
