Journal of Statistical Mechanics: Theory and Experiment最新文献_第7页

Nonequilibrium formulation of varying-temperature bit erasure 变化温度比特擦除的非平衡公式

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-25 DOI: 10.1088/1742-5468/ad526f

Stephen Whitelam

引用次数: 0

Rotational and translational dynamics and rheology in a granular system 颗粒系统中的旋转和平移动力学与流变学

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-25 DOI: 10.1088/1742-5468/ad4e27

José Espinosa-Rodríguez, Pedro Díaz-Leyva and Rodrigo Sánchez

引用次数: 0

Tracer dynamics in the active random average process 主动随机平均过程中的示踪动态

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-25 DOI: 10.1088/1742-5468/ad485f

Saikat Santra, Prashant Singh and Anupam Kundu

{"title":"Tracer dynamics in the active random average process","authors":"Saikat Santra, Prashant Singh and Anupam Kundu","doi":"10.1088/1742-5468/ad485f","DOIUrl":"https://doi.org/10.1088/1742-5468/ad485f","url":null,"abstract":"We investigate the dynamics of tracer particles in the random average process (RAP), a single-file system in one dimension. In addition to the position, every particle possesses an internal spin variable that can alternate between two values, ±1, at a constant rate γ. Physically, the value of dictates the direction of motion of the corresponding particle and, for finite γ, every particle performs non-Markovian active dynamics. Herein, we study the effect of this non-Markovian behavior in the fluctuations and correlations of the positions of tracer particles. We analytically show that the variance of the position of a tagged particle grows sub-diffusively as at large times for the quenched uniform initial conditions. While this sub-diffusive growth is identical to that of the Markovian/non-persistent RAP, the coefficient is rather different and bears the signature of the persistent motion of active particles through higher-point correlations (unlike in the Markovian case). Similarly, for the annealed (steady-state) initial conditions, we find that the variance scales as at large times, with the coefficient once again different from the non-persistent case. Although both ζq and individually depart from their Markovian counterparts, their ratio is still equal to , a condition observed for other diffusive single-file systems. This condition turns out to be true even in the strongly active regimes, as corroborated by extensive simulations and calculations. Finally, we study the correlation between the positions of two tagged particles in both quenched uniform and annealed initial conditions. We verify all our analytical results using extensive numerical simulations.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":"228 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141517116","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

Bethe M-layer construction on the Ising model 伊辛模型上的贝特 M 层构造

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-25 DOI: 10.1088/1742-5468/ad526e

Maria Chiara Angelini, Saverio Palazzi, Giorgio Parisi and Tommaso Rizzo

{"title":"Bethe M-layer construction on the Ising model","authors":"Maria Chiara Angelini, Saverio Palazzi, Giorgio Parisi and Tommaso Rizzo","doi":"10.1088/1742-5468/ad526e","DOIUrl":"https://doi.org/10.1088/1742-5468/ad526e","url":null,"abstract":"In statistical physics, one of the standard methods to study second order phase transitions is the renormalization group that usually leads to an expansion around the corresponding fully connected solution. Unfortunately, often in disordered models, some important finite dimensional second-order phase transitions are qualitatively different or absent in the corresponding fully connected model: in such cases the standard expansion fails. Recently, a new method, the M-layer one, has been introduced that performs an expansion around a different soluble mean field model: the Bethe lattice one. This new method has been already used to compute the upper critical dimension of different disordered systems such as the Random Field Ising model or the Spin glass model with field. If then one wants to go beyond and construct an expansion around to understand how critical quantities get renormalized, the actual computation of all the numerical factors is needed. This next step has still not been performed, being technically more involved. In this paper we perform this computation for the ferromagnetic Ising model without quenched disorder, in finite dimensions: we show that, at one-loop order inside the M-layer approach, we recover the continuum quartic field theory and we are able to identify the coupling constant g and the other parameters of the theory, as a function of macroscopic and microscopic details of the model such as the lattice spacing, the physical lattice dimension and the temperature. This is a fundamental step that will help in applying in the future the same techniques to more complicated systems, for which the standard field theoretical approach is impracticable.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":"19 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532617","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

Random matrix statistics and safety rest areas on interstates in the United States 美国高速公路上的随机矩阵统计和安全休息区

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-25 DOI: 10.1088/1742-5468/ad363d

J Cai, J Peca-Medlin and Y Wan

引用次数: 0

Enhancement of swimmer diffusion through regular kicks: analytic mapping of a scale-independent parameter space 通过有规律的踢腿增强游泳者的扩散：与尺度无关的参数空间的分析映射

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-20 DOI: 10.1088/1742-5468/ad4024

Arnau Jurado Romero, Carles Calero and Rossend Rey

引用次数: 0

Cell information processing via frequency encoding and excitability 通过频率编码和兴奋性进行细胞信息处理

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-16 DOI: 10.1088/1742-5468/ad4af8

Alan Givré and Silvina Ponce Dawson

{"title":"Cell information processing via frequency encoding and excitability","authors":"Alan Givré and Silvina Ponce Dawson","doi":"10.1088/1742-5468/ad4af8","DOIUrl":"https://doi.org/10.1088/1742-5468/ad4af8","url":null,"abstract":"Cells continuously interact with their environment mediating their responses through signaling cascades. Very often, external stimuli induce pulsatile behaviors in intermediaries of the cascade of increasing frequency with the stimulus strength. This is characteristic of intracellular Ca2+ signals involving Ca2+ release through Inositol Trisphosphate Receptors (IP3Rs). The mean frequency of IP3R-mediated Ca2+ pulses has been observed to scale exponentially with the stimulus strength in many cell types. In this paper we use a simple ODE model of the intracellular Ca2+ dynamics for parameters for which there is one excitable fixed point. Including fluctuations through an additive noise term, we derive the mean escape rate from the stationary state and, thus, the mean interpulse time, as a function of the fraction, β, of readily openable IP3Rs. Using an IP3R kinetic model, experimental observations of spatially resolved Ca2+ signals and previous estimates of the IP3 produced upon stimulation we quantify the fluctuations and relate β to [IP3] and the stimulus strength. In this way we determine that the mean interpulse time can be approximated by an exponential function of the latter for ranges such that the covered mean time intervals are similar or larger than those observed experimentally. The study thus provides an easily interpretable explanation, applicable to other pulsatile signaling intermediaries, of the observed exponential dependence between frequency and stimulus, a key feature that makes frequency encoding qualitatively different from other ways commonly used by cells to ‘read’ their environment.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":"25 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141502490","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

Synergistic effects of global exclusion and mutation on replicator dynamics of public cooperation 全球排斥和突变对公共合作复制动态的协同效应

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-16 DOI: 10.1088/1742-5468/ad4e29

Dengyu Jia and Xiaofeng Wang

{"title":"Synergistic effects of global exclusion and mutation on replicator dynamics of public cooperation","authors":"Dengyu Jia and Xiaofeng Wang","doi":"10.1088/1742-5468/ad4e29","DOIUrl":"https://doi.org/10.1088/1742-5468/ad4e29","url":null,"abstract":"Global exclusion represents an effective mechanism for the evolution of cooperation, even within an infinitely well-mixed population. However, it remains unknown how global exclusion performs when faced with the evolutionary challenges posed by both defection and neutral mutation in the public goods game. Here, we report that global exclusion is able to resist or even have a positive interplay with unbiased mutations in the replicator dynamics of public cooperation. In the limit of an infinite population size, we find that the replicator-mutation dynamics can result in either a global stable coexistence or two local stable coexistences, whose attraction basins are separated by an unstable fixed point, between global exclusion and defection, as well as several types of bifurcations. Interestingly, there is an optimal mutation rate that leads to the largest enhancement of the emergent level for cooperation by global exclusion when the exclusion cost is reasonably low. Our results thus indicate that random exploration of strategies by mutation can enhance the beneficial effects of global exclusion on the evolution of public cooperation.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":"17 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141517219","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

Long-term memory on popularity dynamics: insights from the Billboard Hot 100 chart 流行动态的长期记忆：从公告牌热门 100 排行榜中获得的启示

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-16 DOI: 10.1088/1742-5468/ad4e2d

Hyungjoon Soh, Joo Hyung Hong, Jaeseung Jeong and Hawoong Jeong

{"title":"Long-term memory on popularity dynamics: insights from the Billboard Hot 100 chart","authors":"Hyungjoon Soh, Joo Hyung Hong, Jaeseung Jeong and Hawoong Jeong","doi":"10.1088/1742-5468/ad4e2d","DOIUrl":"https://doi.org/10.1088/1742-5468/ad4e2d","url":null,"abstract":"This study delves into the dynamics of popularity as a crucial aspect of population dynamics, drawing from ecology and social science literature. The focus is on constructing an accurate model for understanding the spread of novelty, memes, and influences within human society, particularly through online platforms such as YouTube, Twitter, and Amazon. Traditional models, based on logistic and similar nonlinear differential equations, have shown limitations in long-term prediction accuracy, partially due to unexplained deviations. Recent research suggests the significance of long-term memory effects on popularity, characterized by a power-law response function, a phenomenon particularly evident in the realm of online mass media. Our research analyzes the Billboard Hot 100 chart, a comprehensive dataset of music popularity spanning several decades, to examine these dynamics. By integrating logistic growth with a power-law decaying long-term memory model, we demonstrate that the trajectory of popularity rankings is predominantly influenced by initial popularity levels and the strength of memory effects. Our findings reveal the pivotal role of long-term memory and the extent of initial popularity in shaping popularity dynamics over time. The study underscores the impact of mass media evolution and the differential effects of spreading mechanisms and accumulated popularity on these dynamics, particularly when long-term memory is a factor. This work contributes to a deeper understanding of the mechanisms driving popularity and its long-term trends in the digital age.","PeriodicalId":17207,"journal":{"name":"Journal of Statistical Mechanics: Theory and Experiment","volume":"16 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141517220","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

Critical exponents testing of a random number generator with the Wolff cluster algorithm 用沃尔夫群算法测试随机数生成器的临界指数

IF 2.4 3区物理与天体物理

Journal of Statistical Mechanics: Theory and Experiment Pub Date : 2024-06-16 DOI: 10.1088/1742-5468/ad4e28

Dongjie Zhu, Yun Lin, Guoya Sun and Fuming Wang

引用次数: 0