标题： 奥恩斯坦-乌伦贝克信息游泳者具有外部和内部反馈控制 显示英文标题

标题： Ornstein-Uhlenbeck information swimmers with external and internal feedback controls

摘要： 使用一个欠阻尼的主动Ornstein-Uhlenbeck粒子，我们提出了两种具有外部或内部反馈控制的信息游泳器模型，并对其进行了数值模拟。 根据在每个固定时间间隔（测量时间）后测量的速度，外部控制模型中修改了摩擦系数，而内部控制模型中则改变了活性的持续时间。 在稳态下，这两种信息游泳器在噪声环境中都能获得有限的平均速度，并且通过调整测量时间可以最大化效率。 当主动涨落较大时，内部控制的游泳器通常比外部控制的游泳器能够实现更大的速度和效率。 显示英文摘要

摘要： Using an underdamped active Ornstein-Uhlenbeck particle, we propose two information swimmer models having either external or internal feedback control and perform their numerical simulations. Depending on the velocity that is measured after every fixed time interval (measurement time), the friction coefficient is modified in the externally controlled model, whereas the persistence time for the activity is changed in the internally controlled one. In the steady state, both of these information swimmers acquire finite average velocities in the noisy environment, and the efficiency can be maximized by tuning the measurement time. The internally controlled swimmer can generally achieve a larger velocity and efficiency than the externally controlled one when the active fluctuation is large.