Physical review. E最新文献_第8页

Entropy production in communication channels 通信渠道中的熵产生

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-03 DOI: 10.1103/physreve.110.034101

Farita Tasnim, Nahuel Freitas, David H. Wolpert

{"title":"Entropy production in communication channels","authors":"Farita Tasnim, Nahuel Freitas, David H. Wolpert","doi":"10.1103/physreve.110.034101","DOIUrl":"https://doi.org/10.1103/physreve.110.034101","url":null,"abstract":"In many complex systems, whether biological or artificial, the thermodynamic costs of communication among their components are large. These systems also tend to split information transmitted between any two components across multiple channels. A common hypothesis is that such inverse multiplexing strategies reduce total thermodynamic costs. So far, however, there have been no physics-based results supporting this hypothesis. This gap existed partially because we have lacked a theoretical framework that addresses the interplay of thermodynamics and information in off-equilibrium systems. Here we present the first study that rigorously combines such a framework, stochastic thermodynamics, with Shannon information theory. We develop a minimal model that captures the fundamental features common to a wide variety of communication systems, and study the relationship between the entropy production of the communication process and the channel capacity, the canonical measure of the communication capability of a channel. In contrast to what is assumed in previous works not based on first principles, we show that the entropy production is not always a convex and monotonically increasing function of the channel capacity. However, those two properties are recovered for sufficiently high channel capacity. These results clarify when and how to split a single communication stream across multiple channels.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201059","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

Hybrid reward-punishment in feedback-evolving game for common resource governance 反馈演化博弈中的混合奖惩，促进共同资源治理

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-03 DOI: 10.1103/physreve.110.034301

Zhengyuan Lu, Shijia Hua, Lichen Wang, Linjie Liu

{"title":"Hybrid reward-punishment in feedback-evolving game for common resource governance","authors":"Zhengyuan Lu, Shijia Hua, Lichen Wang, Linjie Liu","doi":"10.1103/physreve.110.034301","DOIUrl":"https://doi.org/10.1103/physreve.110.034301","url":null,"abstract":"How to maintain the sustainability of common resources is a persistent challenge, as overexploiters often undermine collective efforts by prioritizing personal gain. To mitigate the overexploitation of resources by violators, previous theoretical studies have revealed that the introduction of additional incentives, whether to reward rule-abiding cooperators or to punish those who overexploit, can be beneficial for the sustainability of common resources when the resource growth rate is not particularly low. However, these studies have typically considered rewarding and punishing in isolation, thus overlooking the role of their combination in common resource governance. Here, we introduce a hybrid incentive strategy based on reward and punishment within a feedback-evolving game, in which there is a complex interaction between human decision making and resource quantity. Our coevolutionary dynamics reveal that resources will be depleted entirely, even with cooperative strategies for prudent exploitation, when resource growth is slow. When the rate of resource growth is not particularly low, we find that the coupled system can generate a state where resource sustainability and cooperation can be maintained. Furthermore, when the rate of resource growth is moderate, we find that achieving this state cannot simply allocate all incentive budgets to reward. In addition, the increase in per capita incentives significantly promotes the stability of this state.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201095","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

Spread complexity and quantum chaos for periodically driven spin chains 周期性驱动自旋链的扩展复杂性和量子混沌

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-03 DOI: 10.1103/physreve.110.034201

Amin A. Nizami, Ankit W. Shrestha

引用次数: 0

General theory for extended-range percolation on simple and multiplex networks 简单网络和多路网络上扩展范围渗流的一般理论

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-03 DOI: 10.1103/physreve.110.034302

Lorenzo Cirigliano, Claudio Castellano, Ginestra Bianconi

{"title":"General theory for extended-range percolation on simple and multiplex networks","authors":"Lorenzo Cirigliano, Claudio Castellano, Ginestra Bianconi","doi":"10.1103/physreve.110.034302","DOIUrl":"https://doi.org/10.1103/physreve.110.034302","url":null,"abstract":"Extended-range percolation is a robust percolation process that has relevance for quantum communication problems. In extended-range percolation nodes can be trusted or untrusted. Untrusted facilitator nodes are untrusted nodes that can still allow communication between trusted nodes if they lie on a path of distance at most <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>R</mi></math> between two trusted nodes. In extended-range percolation the extended-range giant component (ERGC) includes trusted nodes connected by paths of trusted and untrusted facilitator nodes. Here, based on a message-passing algorithm, we develop a general theory of extended-range percolation, valid for arbitrary values of <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>R</mi></math> as long as the networks are locally treelike. This general framework allows us to investigate the properties of extended-range percolation on interdependent multiplex networks. While the extended-range nature makes multiplex networks more robust, interdependency makes them more fragile. From the interplay between these two effects a rich phase diagram emerges including discontinuous phase transitions and reentrant phases. The theoretical predictions are in excellent agreement with extensive Monte Carlo simulations. The proposed exactly solvable model constitutes a fundamental reference for the study of models defined through properties of extended-range paths.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201097","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

Performance at maximum figure of merit for a Brownian Carnot refrigerator 布朗卡诺制冷器的最大功勋值性能

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-08-12 DOI: 10.1103/physreve.110.024123

O. Contreras-Vergara, G. Valencia-Ortega, N. Sánchez-Salas, J. I. Jiménez-Aquino

{"title":"Performance at maximum figure of merit for a Brownian Carnot refrigerator","authors":"O. Contreras-Vergara, G. Valencia-Ortega, N. Sánchez-Salas, J. I. Jiménez-Aquino","doi":"10.1103/physreve.110.024123","DOIUrl":"https://doi.org/10.1103/physreve.110.024123","url":null,"abstract":"This paper focuses on the coefficient of performance (COP) at maximum <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mi>χ</mi><mi>R</mi></msup></math> figure of merit for a Brownian Carnot-like refrigerator, within the context of the low-dissipation approach. Our proposal is based on the Langevin equation for a Brownian particle bounded to a harmonic potential trap, which can perform Carnot-like cycles at finite time. The theoretical approach is related to the equilibrium ensemble average of <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mrow><mo>〈</mo><msup><mi>x</mi><mn>2</mn></msup><mo>〉</mo></mrow><mi>eq</mi></msub></math> which plays the role of a statelike equation, <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>x</mi></math> being the Brownian particle position. This statelike equation comes from the macroscopic version of the corresponding Langevin equation for a Brownian particle. We show that under quasistatic conditions the COP has the same expression as the macroscopic Carnot refrigerator, while for irreversible cycles at finite time and under symmetric dissipation the optimal COP is the counterpart of Curzon-Ahlborn efficiency as also obtained for irreversible macroscopic refrigerators.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938847","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

Testing for Markovian character of transfer of fluctuations in solar wind turbulence on kinetic scales 测试太阳风湍流波动在动力学尺度上的马尔可夫转移特性

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-08-12 DOI: 10.1103/physreve.110.025203

Dariusz Wójcik, Wiesław M. Macek

{"title":"Testing for Markovian character of transfer of fluctuations in solar wind turbulence on kinetic scales","authors":"Dariusz Wójcik, Wiesław M. Macek","doi":"10.1103/physreve.110.025203","DOIUrl":"https://doi.org/10.1103/physreve.110.025203","url":null,"abstract":"We apply statistical analysis to search for processes responsible for turbulence in physical systems. In our previous studies, we have shown that solar wind turbulence in the inertial range of large magnetohydrodynamic scales exhibits Markov properties. We have recently extended this approach on much smaller kinetic scales. Here we are testing for the Markovian character of stochastic processes in a kinetic regime based on magnetic field and velocity fluctuations in the solar wind, measured onboard the Magnetospheric Multiscale (MMS) mission: behind the bow shock, inside the magnetosheath, and near the magnetopause. We have verified that the Chapman-Kolmogorov necessary conditions for Markov processes is satisfied for local transfer of energy between the magnetic and velocity fields also on kinetic scales. We have confirmed that for magnetic fluctuations, the first Kramers-Moyal coefficient is linear, while the second term is quadratic, corresponding to drift and diffusion processes in the resulting Fokker-Planck equation. It means that magnetic self-similar turbulence is described by generalized Ornstein-Uhlenbeck processes. We show that for the magnetic case, the Fokker-Planck equation leads to the probability density functions of the kappa distributions, which exhibit global universal scale invariance with a linear scaling and lack of intermittency. On the contrary, for velocity fluctuations, higher order Kramers-Moyal coefficients should be taken into account and hence scale invariance is not observed. However, the nonextensity parameter in Tsallis entropy provides a robust measure of the departure of the system from equilibrium. The obtained results are important for a better understanding of the physical mechanism governing turbulent systems in space and laboratory.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938791","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

Dispersion network-transition entropy: A metric for characterizing the complexity of nonlinear signals 分散网络-转换熵：表征非线性信号复杂性的指标

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-08-12 DOI: 10.1103/physreve.110.024205

Bo Geng, Haiyan Wang, Xiaohong Shen, Hongwei Zhang, Yongsheng Yan

{"title":"Dispersion network-transition entropy: A metric for characterizing the complexity of nonlinear signals","authors":"Bo Geng, Haiyan Wang, Xiaohong Shen, Hongwei Zhang, Yongsheng Yan","doi":"10.1103/physreve.110.024205","DOIUrl":"https://doi.org/10.1103/physreve.110.024205","url":null,"abstract":"Extracting meaningful information from signals has always been a challenge. Due to the influence of environmental noise, collected signals often exhibit nonlinear characteristics, rendering traditional metrics inadequate in capturing the dynamic properties and complex structures of signals. To address this challenge, this study proposes an innovative metric for quantifying signal complexity—dispersion network-transition entropy (DNTE), which integrates the concepts of complex networks and information entropy. Specifically, we assign single cumulative distribution function values to network nodes and utilize Markov chains to represent links, transforming nonlinear signals into weighted directed complex networks. Subsequently, we assess the importance of network nodes and links, and employ the mathematical expression of information entropy to calculate the DNTE value, quantifying the complexity of the original signal. Next, through extensive experiments on simulated chaotic models and real underwater acoustic signals, we confirm the outstanding performance of DNTE. The results indicate that, compared to Lempel-Ziv complexity, permutation entropy, and dispersion entropy, DNTE not only more accurately reflects changes in signal complexity but also exhibits higher computational efficiency. Importantly, DNTE demonstrates optimal performance in distinguishing different categories of chaotic models, ships, and modulation signals, showcasing its significant potential in extracting effective information from signals.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938787","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

Interaction between gas channels in water-saturated sands 水饱和砂中气体通道之间的相互作用

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-08-12 DOI: 10.1103/physreve.110.024901

Germán Varas, Gabriel Ramos, Valérie Vidal

{"title":"Interaction between gas channels in water-saturated sands","authors":"Germán Varas, Gabriel Ramos, Valérie Vidal","doi":"10.1103/physreve.110.024901","DOIUrl":"https://doi.org/10.1103/physreve.110.024901","url":null,"abstract":"This work investigates the interaction between gas channels in a vertical Hele-Shaw cell when air is injected simultaneously from two points at a constant flow rate. Unlike single-injection experiments, this dual-point system induces the formation of numerous bubbles, thereby intensifying the interactions between air channels. We use an image analysis technique for tracking motion in the granular bed to define a flow density parameter throughout the cell. The vertical accumulation of this parameter (<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mi>n</mi><mi>z</mi></msub></math>) reveals two specific heights, one marking a finger-to-fracture transition and another indicating the average interaction height of the air channels. Conversely, its horizontal accumulation (<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mi>n</mi><mi>x</mi></msub></math>) assesses the extent of overlap in the fluidized zones created by each airflow. Notably, the analysis indicates that the optimum distribution of the three phases in the system is more closely related to the interaction's variability than its intensity. This finding is significant for industrial applications such as air sparging and catalytic reactors.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938790","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

Variational time reversal for free-energy estimation in nonequilibrium steady states 非平衡稳态自由能估算的变分时间反演

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-08-12 DOI: 10.1103/physreve.110.024120

Jorge L. Rosa-Raíces, David T. Limmer

引用次数: 0

Dynamic flexoelectric instabilities in nematic liquid crystals 向列液晶中的动态柔电不稳定性

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-08-12 DOI: 10.1103/physreve.110.024701

E. S. Pikina, A. R. Muratov, E. I. Kats, V. V. Lebedev

{"title":"Dynamic flexoelectric instabilities in nematic liquid crystals","authors":"E. S. Pikina, A. R. Muratov, E. I. Kats, V. V. Lebedev","doi":"10.1103/physreve.110.024701","DOIUrl":"https://doi.org/10.1103/physreve.110.024701","url":null,"abstract":"Electrohydrodynamic phenomena in liquid crystals constitute an old but still very active research area. The reason is that these phenomena play the key role in various applications of liquid crystals and due to the general interest of the physical community in out-of-equilibrium systems. Nematic liquid crystals (NLCs) are ideally representative for such investigations. Our article aims to study theoretically the linear NLCs dynamics. We include into consideration orientation elastic energy, hydrodynamic motion, external alternating electric field, electric conductivity, and flexoelectric polarization. We analyze the linear stability of the NLC film, determining dynamics of perturbations with respect to the homogeneous initial state of the NLC. For the purpose we compute eigenvalues of the evolution matrix for a period of the external alternating electric field. These eigenvalues determine the amplification factors for the modes during the period. The instability occurs when the principal eigenvalue of the evolution matrix becomes unity by its absolute value. The condition determines the threshold (critical field) for the instability of the uniform state. It turns out that one might expect various types of the instability, only partially known and investigated in the literature. Particularly, we find that the flexoelectric instability may lead to two-dimensionally space-modulated patterns exhibiting time oscillations. This type of the structures was somehow overlooked in the previous works. We formulate conditions needed for the scenario to be realized. We hope that the results of our work will open the door to a broad range of further studies. Of especial importance would be a comprehensive understanding of the role of various material parameters and nonlinear effects which is a key step for the rational design of NLCs exhibiting the predicted in this publication multidimensional oscillating in time patterns.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969156","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