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arXiv 1502.05559cond-mat.stat-mechnlin.AOnlin.CD
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无序平均场旋转系统中的非平衡非均匀稳态分布

Nonequilibrium inhomogeneous steady state distribution in disordered, mean-field rotator systems

Alessandro Campa, Shamik Gupta, Stefano Ruffo

摘要:

我们提出了一种新的方法来计算相空间分布的非平衡定态的一个广泛的类的平均场系统,包括转子受到淬火无序外部驱动和耗散。该方法涉及一个系列的展开的平稳分布的阻尼系数的倒数;展开系数满足递归关系,其解决方案需要计算一个稀疏矩阵,使数值计算简单而有效。我们说明了我们的方法的典范仓本模型的自发集体同步和其两个模式的推广,在存在噪声和惯性,并证明了一个很好的协议之间的模拟和理论的相空间分布。

英文摘要:

We present a novel method to compute the phase space distribution in the nonequilibrium stationary state of a wide class of mean-field systems involving rotators subject to quenched disordered external drive and dissipation. The method involves a series expansion of the stationary distribution in inverse of the damping coefficient; the expansion coefficients satisfy recursion relations whose solution requires computing a sparse matrix, making numerical evaluation simple and efficient. We illustrate our method for the paradigmatic Kuramoto model of spontaneous collective synchronization and for its two mode generalization, in presence of noise and inertia, and demonstrate an excellent agreement between simulations and theory for the phase space distribution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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