Journal of Statistical Mechanics: Theory and Experiment最新文献_第10页

A discrete time crystal order in the driven Ising model: thermal effects, jamming analogy and quench dynamics 驱动伊辛模型中的离散时间晶体秩序：热效应、干扰类比和淬火动力学

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-24 DOI: 10.1088/1742-5468/ad37bd

Kangeun Jeong, Bongsoo Kim, Sung Jong Lee

引用次数: 0

Stress spatial distributions, the Gutenberg–Richter and Omori–Utsu laws 应力空间分布、古登堡-里克特定律和大森-宇津定律

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-24 DOI: 10.1088/1742-5468/ad2dd6

François Pétrélis, K. Chanard, Alexandre Schubnel, Takahiro Hatano

引用次数: 0

Microscopic model for a Brownian translator 布朗平移机的微观模型

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-23 DOI: 10.1088/1742-5468/ad3199

Bart Wijns, Ralf Eichhorn and Bart Cleuren

引用次数: 0

Second Wilson number from third-order perturbation theory for the symmetric single-impurity Kondo model at low temperatures 从三阶扰动理论得出的对称单杂质近藤模型低温下的第二威尔逊数

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-23 DOI: 10.1088/1742-5468/ad3ccf

Kevin Bauerbach and Florian Gebhard

引用次数: 0

Deformation of power law in the double Pareto distribution using uniformly distributed observation time 利用均匀分布的观测时间实现双帕累托分布中幂律的变形

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-23 DOI: 10.1088/1742-5468/ad3a5c

Ken Yamamoto, Takashi Bando, Hirokazu Yanagawa and Yoshihiro Yamazaki

引用次数: 0

Message-passing on hypergraphs: detectability, phase transitions and higher-order information 超图上的信息传递：可探测性、相变和高阶信息

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-22 DOI: 10.1088/1742-5468/ad343b

Nicolò Ruggeri, Alessandro Lonardi and Caterina De Bacco

{"title":"Message-passing on hypergraphs: detectability, phase transitions and higher-order information","authors":"Nicolò Ruggeri, Alessandro Lonardi and Caterina De Bacco","doi":"10.1088/1742-5468/ad343b","DOIUrl":"https://doi.org/10.1088/1742-5468/ad343b","url":null,"abstract":"Hypergraphs are widely adopted tools to examine systems with higher-order interactions. Despite recent advancements in methods for community detection in these systems, we still lack a theoretical analysis of their detectability limits. Here, we derive closed-form bounds for community detection in hypergraphs. Using a message-passing formulation, we demonstrate that detectability depends on the hypergraphs’ structural properties, such as the distribution of hyperedge sizes or their assortativity. Our formulation enables a characterization of the entropy of a hypergraph in relation to that of its clique expansion, showing that community detection is enhanced when hyperedges highly overlap on pairs of nodes. We develop an efficient message-passing algorithm to learn communities and model parameters on large systems. Additionally, we devise an exact sampling routine to generate synthetic data from our probabilistic model. Using these methods, we numerically investigate the boundaries of community detection in synthetic datasets, and extract communities from real systems. Our results extend our understanding of the limits of community detection in hypergraphs and introduce flexible mathematical tools to study systems with higher-order interactions.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801303","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

Collision-aware deflection model for boundary-constrained intersecting pedestrian streams 边界受限交叉行人流的碰撞感知偏转模型

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-17 DOI: 10.1088/1742-5468/ad319c

Zhonghao Zhan, Weiguo Song, Jun Zhang

{"title":"Collision-aware deflection model for boundary-constrained intersecting pedestrian streams","authors":"Zhonghao Zhan, Weiguo Song, Jun Zhang","doi":"10.1088/1742-5468/ad319c","DOIUrl":"https://doi.org/10.1088/1742-5468/ad319c","url":null,"abstract":"We propose a new model of boundary-constrained intersecting pedestrian flow based on the collision-free velocity model, named the collision-aware deflection model (CADM). The movement of pedestrians in the new model depends on the positions and velocities of other pedestrians ahead. A pedestrian walks in the desired direction at a free speed until an obstacle appears in the desired direction. When there is an obstacle in the desired direction, pedestrians tend to choose the direction with the smallest deflection angle. When the decision of a pedestrian conflicts with the movement of the nearest neighbor in front, the pedestrian stops moving. Comparing CADM with other models, the evacuation time of CADM during the simulation is very close to the time in the experiment. CADM also successfully reproduced the stripe phenomenon in boundary-constrained intersecting pedestrian streams, which was difficult to accomplish with the compared model. CADM also inherits several advantages of the original model, in that it can reproduce the corresponding self-organization phenomena in straight corridors and bottlenecks.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140611625","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

Behavioral patterns of children during emergency evacuations: a comparative analysis of experimental observations and simulation results 紧急疏散时儿童的行为模式：实验观察和模拟结果的比较分析

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-17 DOI: 10.1088/1742-5468/ad363b

Liang Chen, Chen Qiao, Jian Zhang, Chuan-Zhi (Thomas) Xie, Tie-Qiao Tang, Yanyan Chen

{"title":"Behavioral patterns of children during emergency evacuations: a comparative analysis of experimental observations and simulation results","authors":"Liang Chen, Chen Qiao, Jian Zhang, Chuan-Zhi (Thomas) Xie, Tie-Qiao Tang, Yanyan Chen","doi":"10.1088/1742-5468/ad363b","DOIUrl":"https://doi.org/10.1088/1742-5468/ad363b","url":null,"abstract":"This study investigates the behavioral patterns of children during emergency evacuations through a dual approach comprising controlled experimental evacuations within a classroom and computational modeling via a cellular automaton (CA) model. Observations from the experiments reveal several characteristic behaviors among children, including preferences for destinations, the impact of obstacles on their movement, as well as patterns of exit utilization, running and pushing during the evacuation process. Drawing upon these empirical findings, a CA model is developed to encapsulate these observed behaviors. A novel algorithm is introduced within this model to simulate the pushing behavior of children during emergency evacuations. Numerical simulations are conducted to validate the capability of the model to replicate the observed behaviors. The simulation results confirm that the model accurately reproduces the child behavior during evacuations. Furthermore, the results indicate that the total evacuation time is directly influenced by both the proportion of children exhibiting pushing behavior and the strength of the pushing force. These insights advance our understanding of child behavior in emergency situations and have significant implications for enhancing public safety.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140611624","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

Variability of entropy force and its coupling with electrostatic and steric hindrance interactions 熵力的可变性及其与静电和立体阻碍相互作用的耦合关系

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-17 DOI: 10.1088/1742-5468/ad363e

S Zhou

{"title":"Variability of entropy force and its coupling with electrostatic and steric hindrance interactions","authors":"S Zhou","doi":"10.1088/1742-5468/ad363e","DOIUrl":"https://doi.org/10.1088/1742-5468/ad363e","url":null,"abstract":"We investigated the effective interaction potential (EIP) between charged surfaces in solvent comprised of dipole dimer molecules added with a certain amount of ionic liquid. Using classical density functional theory, the EIP is calculated and decoupled into entropic and energy terms. Unlike the traditional Asakura–Oosawa (AO) depletion model, the present entropic term can be positive or negative, depending on the entropy change associated with solvent molecule migration from bulk into slit pore. This is determined by pore congestion and disruption of the bulk dipole network. The energy term is determined by the free energy associated with hard-core repulsion and electrostatic interactions between surface charges, ion charges, and polarized charges carried by the dipole dimer molecules. The calculations in this article clearly demonstrate the variability of the entropy term, which contrasts sharply with the traditional AO depletion model, and the corrective effects of electrostatic and spatial hindrance interactions on the total EIP; we revealed several non-monotonic behaviors of the EIP and its entropic and energy terms concerning solvent bulk concentration and solvent molecule dipole moment; additionally, we demonstrated the promoting effect of dipolar solvent on the emergence of like-charge attraction, even in 1:1 electrolyte solutions. The microscopic origin of the aforementioned phenomena was analyzed to be due to the non-monotonic change of dipolar solvent adsorption with dipole moment under conditions of low solution dielectric constant. The present findings offer novel approaches and molecular-level guidance for regulating the EIP. This insight has implications for understanding fundamental processes in various fields, including biomolecule-ligand binding, activation energy barriers, ion tunneling transport, as well as the formation of hierarchical structures, such as mesophases, micro-, and nanostructures, and beyond.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140611542","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

Entropic relations for indistinguishable quantum particles 不可区分量子粒子的熵关系

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-04-09 DOI: 10.1088/1742-5468/ad343a

Marius Lemm

引用次数: 0