论文标题

非线性浴耦合1D中热化的显微镜理论

Microscopic theory of thermalization in 1D with nonlinear bath coupling

论文作者

Rodin, A., Olsen, B. A., Choi, M., Tan, A.

论文摘要

使用非扰动的经典模型,我们从数值上研究了与无限谐波振荡器链相互作用的移动颗粒的动力学,这是通过固态材料通过固态材料抽象的。我们表明,移动粒子和单个链条之间的耦合足以在广泛的系统参数上诱导移动粒子的能量耗散。当我们在链质量的位置引入热波动时,移动粒子表现出热化,最终达到与链条相同的温度尺度。该模型展示了最小成分集如何通过计算有效的模拟在微观运动和宏观可观察物之间表现出联系。最后,我们建议一些可以实现这种模型的实验平台。

Using a non-perturbative classical model, we numerically investigate the dynamics of mobile particles interacting with an infinite chain of harmonic oscillators, an abstraction of ionic conduction through solid-state materials. We show that coupling between the mobile particles and a single mass of the chain is sufficient to induce dissipation of the mobile particles' energy over a wide range of system parameters. When we introduce thermal fluctuations in the position of the chain mass, the mobile particles exhibit thermalization, eventually reaching the same temperature scale as the chain. This model demonstrates how a minimal set of ingredients can exhibit a link between microscopic motion and macroscopic observables, with computationally efficient simulations. Finally, we suggest some experimental platforms that could realize such a model.

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