Physical Review E最新文献_第10页

Impact of environmental stochastic fluctuations on the evolutionary stability of imitation dynamics. 环境随机波动对模仿动力学进化稳定性的影响。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024211

Si-Yi Wang, Yan-Min Che, Yi Tao, Xiu-Deng Zheng

{"title":"Impact of environmental stochastic fluctuations on the evolutionary stability of imitation dynamics.","authors":"Si-Yi Wang, Yan-Min Che, Yi Tao, Xiu-Deng Zheng","doi":"10.1103/PhysRevE.110.024211","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.024211","url":null,"abstract":"To show the impact of environmental noise on imitation dynamics, the stochastic stability and stochastic evolutionary stability of a discrete-time imitation dynamics with random payoffs are studied in this paper. Based on the stochastic local stability of fixation states and constant interior equilibria in a two-phenotype model, we extend the concept of stochastic evolutionary stability to the stochastic imitation dynamics, which is defined as a strategy such that, if all the members of the population adopt it, then the probability for any mutant strategy to invade the population successfully under the influence of natural selection is arbitrarily low. Our main results show clearly that the stochastic evolutionary stability of the system depends only on the properties of the mean matrix of the random payoff matrix and is independent of the randomness of the random payoff matrix. Moreover, as two examples, we show also that under the framework of stochastic imitation dynamics, the noise intensity affects the evolution of cooperative behavior in a stochastic prisoner's dilemma game and the system's nonlinear dynamic behavior.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299055","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

Reinforcement learning with thermal fluctuations at the nanoscale. 纳米级热波动强化学习。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.L023301

Francesco Boccardo, Olivier Pierre-Louis

引用次数: 0

Spontaneous opinion swings in the voter model with latency. 有延迟的选民模型中的自发意见波动。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024313

Giovanni Palermo, Anna Mancini, Antonio Desiderio, Riccardo Di Clemente, Giulio Cimini

引用次数: 0

Uncovering nonequilibrium from unresolved events. 从悬而未决的事件中发现非均衡。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024122

Pedro E Harunari

{"title":"Uncovering nonequilibrium from unresolved events.","authors":"Pedro E Harunari","doi":"10.1103/PhysRevE.110.024122","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.024122","url":null,"abstract":"Closely related to the laws of thermodynamics, the detection and quantification of disequilibria are crucial in unraveling the complexities of nature, particularly those beneath observable layers. Theoretical developments in nonequilibrium thermodynamics employ coarse-graining methods to consider a diversity of partial information scenarios that mimic experimental limitations, allowing the inference of properties such as the entropy production rate. A ubiquitous but rather unexplored scenario involves observing events that can possibly arise from many transitions in the underlying Markov process-which we dub multifilar events-as in the cases of exchanges measured at particle reservoirs, hidden Markov models, mixed chemical and mechanical transformations in biological function, composite systems, and more. We relax one of the main assumptions in a previously developed framework, based on first-passage problems, to assess the non-Markovian statistics of multifilar events. By using the asymmetry of event distributions and their waiting times, we put forward model-free tools to detect nonequilibrium behavior and estimate entropy production, while discussing their suitability for different classes of systems and regimes where they provide no new information, evidence of nonequilibrium, a lower bound for entropy production, or even its exact value. The results are illustrated in reference models through analytics and numerics.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299092","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

Steepness-fragility insights from the temperature derivative analysis of dielectric data of a highly nonsymmetric liquid crystal dimer. 从高度非对称液晶二聚体介电数据的温度导数分析中洞察陡峭-脆性。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024702

Josep Salud, Nerea Sebastián, María R de la Fuente, S Diez-Berart, David O López

{"title":"Steepness-fragility insights from the temperature derivative analysis of dielectric data of a highly nonsymmetric liquid crystal dimer.","authors":"Josep Salud, Nerea Sebastián, María R de la Fuente, S Diez-Berart, David O López","doi":"10.1103/PhysRevE.110.024702","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.024702","url":null,"abstract":"A comprehensive dynamic analysis of the dielectric relaxation-time data across a broad temperature range for both isotropic and nematic phases has been conducted on the CBO3O.Py liquid crystal dimer, the shorter chain-length compound within the highly nonsymmetric pyrene-based series of liquid crystal dimers (CBOnO.Py, with n ranging from 3 to 11). It was known from another previous study that in the nematic phase, three different relaxation processes contribute to the complex dielectric permittivity depending on the orientation of the alignment axis with respect to the probing electric field direction. The temperature-derivative analysis of the relaxation-time data using different analytic functions reveals that the critical-like description, through the dynamic scaling model, best portrays the relaxation-time data in the nematic phase as the system approaches the glass transition. A single glass transition temperature is obtained which is consistent with thermal stimulated depolarization currents experimental determinations published elsewhere. From temperature-dependent steepness index m(T), the activation-critical model is also considered as a more general analytic function from which the dynamic scaling model is a terminal approximation. Additionally, the critical-like parametrization provides insight into obtaining a universal description of the temperature-dependent steepness index m(T), for all liquid crystal compounds belonging to symmetry-selected glass formers, such as rodlike liquid crystal monomers.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299083","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

Controlled stigmergy in quasi-one-dimensional active particle systems. 准一维活性粒子系统中的受控静态能量。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024605

Gregor Bánó, Cyril Slabý, Alena Strejčková, Zoltán Tomori, Andrej Hovan, Pavol Miskovsky, Denis Horvath

引用次数: 0

Dynamics of magnetization growth and relaxation in ferrofluids. 铁流体中磁化增长和弛豫的动力学。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024610

Igor M Subbotin, Alexey O Ivanov, Philip J Camp

{"title":"Dynamics of magnetization growth and relaxation in ferrofluids.","authors":"Igor M Subbotin, Alexey O Ivanov, Philip J Camp","doi":"10.1103/PhysRevE.110.024610","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.024610","url":null,"abstract":"The dynamics of the growth and relaxation of the magnetization in ferrofluids are determined using theory based on the Fokker-Planck-Brown equation, and Brownian-dynamics simulations. Magnetization growth starting from an equilibrium nonmagnetized state in zero field, and following an instantaneous application of a uniform field of arbitrary strength, is studied with and without interparticle interactions. Similarly, magnetization relaxation is studied starting from an equilibrium magnetized state in a field of arbitrary strength, and following instantaneous removal of the field. In all cases, the dynamics are studied in terms of the time-dependent magnetization m(t). The field strength is described by the Langevin parameter α, the strength of the interparticle interactions is described by the Langevin susceptibility χ_{L}, and the individual particles undergo Brownian rotation with time τ_{B}. For noninteracting particles, the average growth time decreases with increasing α due to the torque exerted by the field, while the average relaxation time stays constant at τ_{B}; with vanishingly weak fields, the timescales coincide. The same basic picture emerges for interacting particles, but the weak-field timescales are larger due to collective particle motions, and the average relaxation time exhibits a weak, nonmonotonic field dependence. A comparison between theoretical and simulation results is excellent for noninteracting particles. For interacting particles with χ_{L}=1 and 2, theory and simulations are in qualitative agreement, but there are quantitative deviations, particularly in the weak-field regime, for reasons that are connected with the description of interactions using effective fields.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299041","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

Optimizing leapover lengths of Lévy flights with resetting. 优化重置莱维飞行的跃迁长度

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.L022103

Mattia Radice, Giampaolo Cristadoro

引用次数: 0

Kuramoto variables as eigenvalues of unitary matrices. 作为单元矩阵特征值的仓本变量

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024217

Marcel Novaes, Marcus A M de Aguiar

引用次数: 0

Identifying vegetation patterns for a qualitative assessment of land degradation using a cellular automata model and satellite imagery. 利用细胞自动机模型和卫星图像识别植被模式，对土地退化进行定性评估。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2024-08-01 DOI: 10.1103/PhysRevE.110.024136

Hediye Yarahmadi, Yves Desille, John Goold, Francesca Pietracaprina

{"title":"Identifying vegetation patterns for a qualitative assessment of land degradation using a cellular automata model and satellite imagery.","authors":"Hediye Yarahmadi, Yves Desille, John Goold, Francesca Pietracaprina","doi":"10.1103/PhysRevE.110.024136","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.024136","url":null,"abstract":"We aim to identify the spatial distribution of vegetation and its growth dynamics with the purpose of obtaining a qualitative assessment of vegetation characteristics tied to its condition, productivity and health, and to land degradation. To do so, we compare a statistical model of vegetation growth and land surface imagery derived vegetation indices. Specifically, we analyze a stochastic cellular automata model and data obtained from satellite images, namely using the normalized difference vegetation index and the leaf area index. In the experimental data, we look for areas where vegetation is broken into small patches and qualitatively compare it to the percolating, fragmented, and degraded states that appear in the cellular automata model. We model the periodic effect of seasons, finding numerical evidence of a periodic fragmentation and recovery phenomenology if the model parameters are sufficiently close to the model's percolation transition. We qualitatively recognize these effects in real-world vegetation images and consider them a signal of increased environmental stress and vulnerability. Finally, we show an estimation of the environmental stress in land images by considering both the vegetation density and its clusterization.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299054","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