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在哈密尔顿子模型中,通过热流控制元稳定状态
Michikazu Kobayashi1, Naoko Nakagawa2, Shin-Ichi Sasa3
1School of Engeneering Science, Kochi University of Technology, Miyanoguchi 185, Tosayamada, Kami, Kochi 782-8502, Japan.
Physical review letters
|June 30, 2023
概括
在哈密尔顿系统的热传导中,局部平衡热力学被侵犯. 数值分析显示接口温度偏差,稳定热流下的元稳定状态,与扩展热力学相一致.
科学领域:
- 热力学是一种热力学.
- 统计力学 统计力学
- 计算物理 计算物理
背景情况:
- 汉密尔顿系统中非平衡动力学的宏观描述依赖于局部平衡热力学.
- 在热流下理解相位共存对于非平衡统计力学至关重要.
研究的目的:
- 在热传导中对相位共存的局部平衡热力学假设的违反情况进行数值调查.
- 在热流下的2D哈密尔顿波特模型中分析有序和无序状态之间的接口的行为.
主要方法:
- 2D哈密尔顿波茨模型的数值分析.
- 模拟热传导动态的模拟.
- 对界面温度偏差与平衡过渡温度的分析.
主要成果:
- 从平衡过渡温度观察到接口温度的偏差.
- 这表明元稳定状态通过热流稳定.
- 使用从扩展热力学框架中的公式量化偏差.
结论:
- 在研究的系统中,局部平衡热力学假设被违反了.
- 热流在相位共存期间在稳定转移稳定的状态中发挥作用.
- 一个扩展的热力学框架可以描述这些观察到的偏差.
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