跑动粒子的时间依赖性质. II. II. II. II. II. II. II. II. II. II. II. II. II. II. II. II. II. II. 当前波动 当前波动
Tanmoy Chakraborty1, Punyabrata Pradhan1
1Department of Physics of Complex Systems, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700106, India.
这项研究检查了网格上运行和的粒子 (RTP) 的当前波动. 我们在波动和移动性中发现了普遍的缩放行为,与模拟一致.
科学领域:
- 统计力学 统计力学
- 软物质物理学 软物质物理学
- 凝聚物质理论 凝聚物质理论
背景情况:
- 运行和的粒子 (RTPs) 是活性物质的关键模型,在格子上表现出复杂的动态.
- 了解稳态电流波动对于描述非平衡系统中的传输特性至关重要.
- 之前的研究已经探索了RTP,但需要对当前波动和缩放规律进行全面分析.
研究的目的:
- 在1D格子上研究两个硬核运行和动粒子 (RTP) 模型中的稳定状态电流波动.
- 为了确定当前波动与时间和系统大小的缩放行为.
- 探索在稀释和缓慢翻转的极限中粒子移动性的普遍缩放规律.
主要方法:
- 在周期性1D网格上对两个硬核RTP模型的理论分析:标准RTP和长距离网格气体 (LLG).
- 计算累积电流波动及其对时间 (T) 和晶格大小 (L) 的依赖.
- 对电流波动和粒子移动性的缩放函数的导数,与模拟结果进行验证.
主要成果:
- 流动波动随着时间的推移,从亚扩散 (α=1/2) 到扩散 (α=1) 的行为呈现交叉.
- 确定了一种普遍的缩放曲线,用于缩放债券当前波动W(y),独立于模型细节.
- 在稀释的,缓慢的翻转极限中发现了缩放式移动性的缩放定律H ((ψ),尽管依赖于模型.
结论:
- 这项研究揭示了电流波动和RTP在网格上的移动性的普遍缩放特性.
- 理论预测显示,这两种模型的模拟结果与理论预测非常一致.
- 这项工作为在活性物质系统中的运输现象提供了更深入的理解.
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