One-dimensional arrays of oscillators: Energy localization in thermal equilibrium
One-dimensional arrays of oscillators: Energy localization in thermal equilibrium
复制标题
一维振荡器阵列：热平衡中的能量局部化
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
K. Lindenberg
中科院分区：
文献类型：
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作者：
R. Reigada;A. Romero;A. Sarmiento;K. Lindenberg
所有处于热平衡的系统由于热涨落而表现出空间可变的能量景观。因此，在任何时刻，系统的某些部分相对于系统的其他部分自然地存在能量的磁驱动局部化。空间景观的具体特征，例如能量方差，取决于系统的热力学性质，并且从一个系统到另一个系统是不同的。一个给定的能量景观的时间持久性，即能量波动（高或低）向热平均衰减的方式，取决于系统的动力学特征。讨论了一维非简谐链在热平衡状态下自发能量局域化的时空特性。
All systems in thermal equilibrium exhibit a spatially variable energy landscape due to thermal fluctuations. Thus at any instant there is naturally a thermodynamically driven localization of energy in parts of the system relative to other parts of the system. The specific characteristics of the spatial landscape such as, for example, the energy variance, depend on the thermodynamic properties of the system and vary from one system to another. The temporal persistence of a given energy landscape, that is, the way in which energy fluctuations (high or low) decay toward the thermal mean, depends on the dynamical features of the system. We discuss the spatial and temporal characteristics of spontaneous energy localization in 1D anharmonic chains in thermal equilibrium.