论文标题
简单的液体，时间破裂的逆转不变性
Simple fluid with broken time reversal invariance
论文作者
论文摘要
我们用简单的碰撞规则来表征一个硬球系统，该系统破坏了时间逆转对称性，但可以节省能量。这些碰撞导致了A-Exiral，各向同性和均匀的固定状态，其特性是在模拟中确定的，并将其与最初针对弹性硬球开发的近似理论进行了比较。在非平衡流体状态下，速度相关，这一现象从其他非平衡固定状态知道。相关性长期衰减，例如$ 1/r^d $ in $ d $尺寸。预计这种相关性是基于均衡的一般理由，并且以前在驱动或非平稳系统中观察到。
We characterize a system of hard spheres with a simple collision rule that breaks time reversal symmetry, but conserves energy. The collisions lead to an a-chiral, isotropic, and homogeneous stationary state, whose properties are determined in simulations and compared to an approximate theory originally developed for elastic hard spheres. In the nonequilibrium fluid state, velocities are correlated, a phenomenon known from other nonequilibrium stationary states. The correlations are long-ranged decaying like $1/r^d$ in $d$ dimensions. Such correlations are expected on general grounds far from equilibrium and had previously been observed in driven or non-stationary systems.
