一个布朗粒子在一个排斥潜力的有限时间膨胀
P L Krapivsky1,2, Baruch Meerson3
1Boston University, Department of Physics, Boston, Massachusetts 02215, USA.
Physical review. E
|September 16, 2025
概括
一个特定潜力的布朗粒子在有限的时间内逃离到无限. 它的逃逸时间分布显示了普遍的指数衰变和基本的奇点,无论尺寸如何.
科学领域:
- 统计物理学的统计物理.
- 非线性动力学是一种非线性动力学.
- 数学物理学的数学物理.
背景情况:
- 布朗运动描述了随机粒子运动.
- 过度缓和的运动通过忽视惯性来简化动力学.
- 排斥潜能抵制粒子运动.
研究的目的:
- 在功率定律潜力中研究粒子逃逸动态.
- 确定平均逃脱 (爆发) 时间.
- 分析逃避时间的概率分布.
主要方法:
- 对过度减压的布朗运动进行分析处理.
- 分析权力法律的排斥潜力.
- 概率分布及其尾部的研究.
主要成果:
- 粒子在有限的时间内逃到无限,因为潜在的增长速度比二次增长速度快.
- 导出平均爆发时间.
- 在爆发时间分布中确定了普遍特征:长时间的指数衰减和短时间的基本奇点.
结论:
- 逃脱动态和爆发时间分布表现出跨维度的普遍特征,用于快速增长的潜力.
- 量子潜能作为一个可处理的模型,用于详细分析.
相关概念视频
Limits with Oscillating Discontinuities
406
An oscillating discontinuity is a type of discontinuity in which a function’s values fluctuate infinitely often as the input approaches a particular point. Unlike jump discontinuities, where the function suddenly shifts between two values, or infinite discontinuities, where the function diverges without bound, an oscillating discontinuity arises from rapid back-and-forth variation. Because the function never stabilizes toward a single value, no finite limit exists at that point.One of the...
406
Improper Integrals: Infinite Intervals
59
An integral is classified as improper due to an infinite interval when at least one of its limits of integration extends to positive or negative infinity. In such cases, the region under the curve is unbounded, and standard techniques for evaluating definite integrals are not directly applicable. Instead, the improper integral is defined through a limiting process that allows one to determine whether the accumulated area remains finite despite the infinite domain.Application to Exponential...
59
First Law: Particles in One-dimensional Equilibrium
7.9K
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If...
7.9K
Mean free path and Mean free time
5.0K
Consider the gas molecules in a cylinder. They move in a random motion as they collide with each other and change speed and direction. The average of all the path lengths between collisions is known as the "mean free path."
5.0K
Equilibrium Conditions for a Particle
2.2K
When an object is in equilibrium, it is either at rest or moving with a constant velocity. There are two types of equilibrium: static and dynamic. Static equilibrium occurs when an object is at rest, while dynamic equilibrium occurs when an object is moving with a constant velocity. In both cases, there must be a balance of forces acting on the object.
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
2.2K
BIBO stability of continuous and discrete -time systems
887
System stability is a fundamental concept in signal processing, often assessed using convolution. For a system to be considered bounded-input bounded-output (BIBO) stable, any bounded input signal must produce a bounded output signal. A bounded input signal is one where the modulus does not exceed a certain constant at any point in time.
To determine the BIBO stability, the convolution integral is utilized when a bounded continuous-time input is applied to a Linear Time-Invariant (LTI) system....
To determine the BIBO stability, the convolution integral is utilized when a bounded continuous-time input is applied to a Linear Time-Invariant (LTI) system....
887


