Journal of Statistical Physics最新文献_第10页

A New Model for Preferential Attachment Scheme with Time-Varying Parameters 具有时变参数的优先附着计划新模型

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-19 DOI: 10.1007/s10955-024-03304-w

Bo Zhang, Hanyang Tian, Chi Yao, Guangming Pan

引用次数: 0

The Simplified Approach to the Bose Gas Without Translation Invariance 不带平移不变性的玻色气体简化方法

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-17 DOI: 10.1007/s10955-024-03299-4

Ian Jauslin

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引用次数: 0

Four-Parameter Coalescing Ballistic Annihilation 四参数凝聚弹道湮灭

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-17 DOI: 10.1007/s10955-024-03305-9

Kimberly Affeld, Christian Dean, Matthew Junge, Hanbaek Lyu, Connor Panish, Lily Reeves

引用次数: 0

Thouless–Anderson–Palmer Equations for the Multi-species Sherrington–Kirkpatrick Model 多物种 Sherrington-Kirkpatrick 模型的 Thouless-Anderson-Palmer 公式

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-15 DOI: 10.1007/s10955-024-03288-7

Qiang Wu

引用次数: 0

Derivation of Coupled KPZ Equations from Interacting Diffusions Driven by a Single-Site Potential 从单点势驱动的相互作用扩散推导耦合 KPZ 方程

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-13 DOI: 10.1007/s10955-024-03302-y

Kohei Hayashi

引用次数: 0

The Emergence of Order in Many Element Systems 多元素系统中秩序的出现

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-13 DOI: 10.1007/s10955-024-03307-7

Amit Einav

引用次数: 0

Pseudo-potential Lattice Boltzmann Method with an Improved Forcing Scheme for the Cumulant Collision Model 针对累积碰撞模型采用改进强迫方案的伪势点阵玻尔兹曼法

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-12 DOI: 10.1007/s10955-024-03303-x

Junho Kim, Young Keon Gong, Yeongchae Park, Peter Jeong

{"title":"Pseudo-potential Lattice Boltzmann Method with an Improved Forcing Scheme for the Cumulant Collision Model","authors":"Junho Kim, Young Keon Gong, Yeongchae Park, Peter Jeong","doi":"10.1007/s10955-024-03303-x","DOIUrl":"10.1007/s10955-024-03303-x","url":null,"abstract":"<div><p>This paper proposes an improved cumulant collision model for the pseudo-potential lattice Boltzmann method (LBM) to increase the stability of multiphase flow simulations involving low viscosities. This model is based on the work of Kharmiani et al. in (J Stat Phys 175: 47, 2019), which can be extended regardless of the collision model. The original cumulant collision model (Geier et al. in Comput Math Appl 70:507, 2015) causes a non-physical shape of droplets in pseudo-potential LBM because only the first-order central moments are considered in the forcing scheme. The improved cumulant collision model proposed in this paper applies the central moment forcing scheme to the original cumulant model to cover the high-order central moments. Several numerical simulations were carried out to validate the proposed model. First, the problem of a stationary liquid layer was solved, where the proposed model was demonstrated to be thermodynamically consistent. Second, the problem of a stationary droplet was solved, where the result agreed well with Laplace’s law. Third, the problem of a droplet impact on a liquid film was solved, where the crown radius agreed well with the analytical and numerical results available. Fourth, the simulation results carried out with the raw moment, central moment, and the proposed improved cumulant collision models were compared, as the liquid and vapor viscosities were gradually lowered. With all else being equal, only the lattice Boltzmann method with the proposed improved cumulant collision model was able to successfully simulate a density ratio of <b>720</b> and a Reynolds number of <span>({mathbf {8.7}}{mathbf {times 10}}^{{textbf{4}}})</span>.</p></div>","PeriodicalId":667,"journal":{"name":"Journal of Statistical Physics","volume":"191 7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141610660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On Resistance Distance and Kirchhoff Index of Cacti Networks 论仙人掌网络的电阻距离和基尔霍夫指数

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-08 DOI: 10.1007/s10955-024-03300-0

Muhammad Faisal Nadeem, Faiza Ishfaq, Ayesha Shabbir

{"title":"On Resistance Distance and Kirchhoff Index of Cacti Networks","authors":"Muhammad Faisal Nadeem, Faiza Ishfaq, Ayesha Shabbir","doi":"10.1007/s10955-024-03300-0","DOIUrl":"10.1007/s10955-024-03300-0","url":null,"abstract":"<div><p>Resistance distance in electrical circuits measures how much a component or an entire circuit resists the flow of electric current. When dealing with intricate circuits, this term explicitly denotes the total resistance observed between any two points, which varies based on the configuration and resistance values of the components within the circuit. The Kirchhoff index is a metric used to quantify the mean resistance distance across all pairs of nodes in an electrical network. In graph theory, these networks are depicted as graphs with nodes representing electrical components and edges symbolizing the connecting wires. The resistance distance between any two nodes is calculated as if the graph were an electrical circuit, with each edge functioning as a resistor. We focus on a particular type of graph known as a cacti graph, denoted by <span>(mathcal {C}(n,s))</span>, which features interconnected cycles that share a single common vertex, with <i>n</i> representing the total number of nodes and <i>s</i> the number of cycles. This paper explores cacti networks to establish the maximum possible values of the Kirchhoff index for these structures.</p></div>","PeriodicalId":667,"journal":{"name":"Journal of Statistical Physics","volume":"191 7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nature Abhors a Vacuum: A Simple Rigorous Example of Thermalization in an Isolated Macroscopic Quantum System 自然厌恶真空：隔离宏观量子系统热化的简单严谨实例

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-07 DOI: 10.1007/s10955-024-03289-6

Naoto Shiraishi, Hal Tasaki

{"title":"Nature Abhors a Vacuum: A Simple Rigorous Example of Thermalization in an Isolated Macroscopic Quantum System","authors":"Naoto Shiraishi, Hal Tasaki","doi":"10.1007/s10955-024-03289-6","DOIUrl":"10.1007/s10955-024-03289-6","url":null,"abstract":"<div><p>We show, without relying on any unproven assumptions, that a low-density free fermion chain exhibits thermalization in the following (restricted) sense. We choose the initial state as a pure state drawn randomly from the Hilbert space in which all particles are in half of the chain. This represents a nonequilibrium state such that the half chain containing all particles is in equilibrium at infinite temperature, and the other half chain is a vacuum. We let the system evolve according to the unitary time evolution determined by the Hamiltonian and, at a sufficiently large typical time, measure the particle number in an arbitrary macroscopic region in the chain. In this setup, it is proved that the measured number is close to the equilibrium value with probability very close to one. Our result establishes the presence of thermalization in a concrete model in a mathematically rigorous manner. The key for the proof is a new strategy to show that a randomly generated nonequilibrium initial state typically has a large enough effective dimension by using only mild verifiable assumptions. In the present work, we first give general proof of thermalization based on two assumptions, namely, the absence of degeneracy in energy eigenvalues and a property about the particle distribution in energy eigenstates. We then justify these assumptions in a concrete free-fermion model, where the absence of degeneracy is established by using number-theoretic results. This means that our general result also applies to any lattice gas models in which the above two assumptions are justified. To confirm the potential wide applicability of our theory, we discuss some other models for which the essential assumption about the particle distribution is easily verified, and some non-random initial states whose effective dimensions are sufficiently large.</p></div>","PeriodicalId":667,"journal":{"name":"Journal of Statistical Physics","volume":"191 7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The High-Order Corrections of Discrete Harmonic Measures and Their Correction Constants 离散谐波量的高阶修正及其修正常数

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2024-07-04 DOI: 10.1007/s10955-024-03292-x

Yixiang Wang, Kainan Xiang, Shangjie Yang, Lang Zou

引用次数: 0