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arXiv 1406.6370cond-mat.stat-mechnlin.CD
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扩散系统中最大李雅普诺夫指数的大尺度涨落

Large-scale fluctuations of the largest Lyapunov exponent in diffusive systems

Tanguy Laffargue, Peter Sollich, Julien Tailleur, Frédéric van Wijland

摘要:

我们提出了一个一般的形式主义计算的最大李雅普诺夫指数和它的波动在空间扩展的系统所描述的扩散波动的流体动力学,从而扩展的概念动力系统理论的非平衡系统的范围很广。我们的分析结果相比有利的晶格模型的热传导模拟。我们进一步展示了对称简单排斥过程的李雅普诺夫指数的计算与损伤扩散和两个物种对湮灭过程有关,为此我们的形式主义产生了新的有限大小的结果。

英文摘要:

We present a general formalism for computing the largest Lyapunov exponent and its fluctuations in spatially extended systems described by diffusive fluctuating hydrodynamics, thus extending the concepts of dynamical system theory to a broad range of non-equilibrium systems. Our analytical results compare favourably with simulations of a lattice model of heat conduction. We further show how the computation of the Lyapunov exponent for the Symmetric Simple Exclusion Process relates to damage spreading and to a two-species pair annihilation process, for which our formalism yields new finite size results.

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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