运行和的粒子的网站透过渡
Soumya K Saha1, Aikya Banerjee1, P K Mohanty1
1Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India. pkmohanty@iiserkol.ac.in.
Soft matter
|November 22, 2024
概括
运行和的粒子 (RTPs) 在网格上表现出相位分离和分解过渡. 它们的临界指数与伊辛模型的临界指数相匹配,揭示了活性物质系统中普遍的缩放行为.
科学领域:
- 统计物理 统计物理
- 软物质物理学 软物质物理学
- 复杂的系统复杂的系统.
背景情况:
- 运行和的粒子 (RTPs) 是活性物质的基本模型,表现出复杂的集体行为.
- 透过渡和运动诱导相分离 (MIPS) 是理解自我组织系统的关键现象.
- 了解粒子动力学和新兴集体状态之间的相互作用对于活性物质研究至关重要.
研究的目的:
- 为了研究2D网格上运行和的粒子的透过渡和相位行为.
- 分析与这些转换相关的关键指数和缩放函数.
- 建立活性物质现象与传统的统计物理模型 (如伊辛格模型) 之间的联系.
主要方法:
- 模拟在二维方形格子上运行和的粒子.
- 对粒子运动的分析,包括沿着方向运行和翻转以改变方向.
- 通过不同的扩散 (p) 和翻转 (ω) 速率来表征集群形成,相位分离和透过渡.
主要成果:
- 观察到一个回入点-透过渡,导致相隔和混合相随着扩散率的增加.
- 临界指数在 ω-p 平面的临界直线上不断变化.
- 一个与伊辛格模型相同的通用缩放函数控制了透过渡.
结论:
- 这项研究揭示了活性物质 (RTP) 的临界行为与平衡统计力学 (伊辛模型) 之间的直接联系.
- 移动性诱导相位分离的临界指数与已知乘法因子的透临界指数相关.
- 这项工作突出了不同物理系统中关键现象的普遍性,弥合了活性和平衡物质.
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