arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.09092cond-mat.stat-mechmath.DSnlin.AO
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精确响应理论与仓本动力学

Exact Response Theory and Kuramoto dynamics

Debora Amadori, Matteo Colangeli, Astrid Correa, Lamberto Rondoni

摘要:

本文用非平衡分子动力学中引入的基于耗散函数的精确响应理论研究了仓本振子的动力学行为。虽然线性响应理论是非平衡统计力学的基石,但它一般不适用于经历相变的系统。事实上,在这种情况下,即使是很小的扰动也可能导致状态的大修改。相反,人们期望一个精确的理论来处理这种情况。仓本动力学,它经历同步过渡,因此研究作为上述精确理论的测试平台。这两种方法之间的比较显示了线性理论是如何失败的,而精确理论产生了正确的响应。

英文摘要:

The dynamics of Kuramoto oscillators is investigated in terms of the exact response theory based on the Dissipation Function, which has been introduced in the field of nonequilibrium molecular dynamics. While linear response theory is a cornerstone of nonequilibrium statistical mechanics, it does not apply, in general, to systems undergoing phase transitions. Indeed, even a small perturbation may in that case result in a large modification of the state. An exact theory is instead expected to handle such situations. The Kuramoto dynamics, which undergoes synchronization transitions, is thus investigated as a testbed for the exact theory mentioned above. A comparison between the two approaches shows how the linear theory fails, while the exact theory yields the correct response.

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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