Title: Structure Factor of a Phase Separating Binary Mixture with Natural and Forceful Interconversion of Species Show Chinese title

Title: 相分离双组分混合物的结构因子与物种的自然和强制转化

Abstract: Using a modified Cahn-Hilliard-Cook theory for spinodal decomposition in a binary mixture that exhibits both diffusion and interconversion dynamics, we derive the time-dependent structure factor for concentration fluctuations. We compare the theory and obtain a qualitative agreement with simulations of the temporal evolution of the order parameter and structure factor in a nonequilibrium Ising/lattice-gas hybrid model in the presence of an external source of forceful interconversion. In particular, the characteristic size of the steady-state phase domain is predicted from the lower cut-off wavenumber of the amplification factor in the generalized spinodal-decomposition theory. Show Chinese abstract

Abstract: 使用改进的Cahn-Hilliard-Cook理论来研究二元混合物中的旋节分解，该理论考虑了扩散和转换动力学，我们推导出浓度涨落的时间依赖结构因子。 我们比较了理论并获得了与非平衡Ising/格点气体混合模型中序参量和结构因子时间演化模拟的定性一致结果，在存在强制转换外部源的情况下。 特别是，稳态相域的特征尺寸由广义旋节分解理论中放大因子的下限波数预测得出。