Physical review. E最新文献_第8页

Optimal crawling: From mechanical to chemical actuation. 最佳爬行：从机械到化学驱动。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054413

P Recho, L Truskinovsky

引用次数: 0

Scaling limit of domino tilings on a pentagonal domain. 五边形域上多米诺骨牌平铺的尺度极限。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054140

Filippo Colomo, Andrei G Pronko

引用次数: 0

Dynamical system model of gentrification: Exploring a simple rent control strategy. 士绅化的动力系统模型：探索一个简单的租金控制策略。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054305

Jonathan D Shaw, Juan G Restrepo, Nancy Rodríguez

{"title":"Dynamical system model of gentrification: Exploring a simple rent control strategy.","authors":"Jonathan D Shaw, Juan G Restrepo, Nancy Rodríguez","doi":"10.1103/PhysRevE.110.054305","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054305","url":null,"abstract":"Motivated by the need to understand the factors driving gentrification, we introduce and analyze two simple dynamical systems that model the interplay between three potential drivers of the phenomenon. The constructed systems are based on the assumption that three canonical drivers exist: a subpopulation that increases the desirability of a neighborhood, the desirability of a neighborhood, and the average price of real estate in a neighborhood. The second model modifies the first and implements a simple rent control scheme. For both models, we investigate the linear stability of equilibria and numerically determine the characteristics of oscillatory solutions as a function of system parameters. Introducing a rent control scheme stabilizes the system, in the sense that the parameter regime under which solutions approach equilibrium is expanded. However, oscillatory time series generated by the rent control model are generally more disorganized than those generated by the nonrent control model; in fact, long-lived transient chaos was observed under certain conditions in the rent control case. Our results illustrate that even simple models of urban gentrification can lead to complex temporal behavior.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054305"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142846720","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

Thermodynamic Langevin equations. 热力学朗格万方程。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054136

Amilcare Porporato, Salvatore Calabrese, Lamberto Rondoni

{"title":"Thermodynamic Langevin equations.","authors":"Amilcare Porporato, Salvatore Calabrese, Lamberto Rondoni","doi":"10.1103/PhysRevE.110.054136","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054136","url":null,"abstract":"The physical significance of the stochastic processes associated to the generalized Gibbs ensembles is scrutinized here with special attention to the thermodynamic fluctuations of small systems. Differently from the so-called stochastic thermodynamics, which starts from stochastic versions of the first and second law of thermodynamics and associates thermodynamic quantities to microscopic variables, here we consider stochastic variability directly in the macroscopic variables. By recognizing the potential structure of the Gibbs ensembles, when expressed as a function of the potential entropy generation, we obtain exact nonlinear thermodynamic Langevin equations (TLEs) for macroscopic variables, with drift expressed in terms of entropic forces. The analysis of the canonical ensemble for an ideal monoatomic gas and the related TLEs show that introducing currents leads to nonequilibrium heat transfer conditions with interesting bounds on entropy production but with no obvious thermodynamic limit. For a colloidal particle under constant force, the TLEs for macroscopic variables are different from those for the microscopic position, typically used in stochastic thermodynamics; while TLEs are consistent with the fundamental equation obtained from the Hamiltonian, stochastic thermodynamics requires isothermal conditions and entropy proportional to position.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054136"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847183","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

Wave-driven phase wave patterns in a ring of FitzHugh-Nagumo oscillators. FitzHugh-Nagumo振子环中的波驱动相波模式。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054208

Daniel Cebrián-Lacasa, Marcin Leda, Andrew B Goryachev, Lendert Gelens

引用次数: 0

Error thresholds in the presence of epistatic interactions. 上位相互作用下的错误阈值。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054412

D A Herrera-Martí

{"title":"Error thresholds in the presence of epistatic interactions.","authors":"D A Herrera-Martí","doi":"10.1103/PhysRevE.110.054412","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054412","url":null,"abstract":"Models for viral populations with high replication error rates (such as RNA viruses) rely on the quasispecies concept, in which mutational pressure beyond the so-called \"error threshold\" leads to a loss of essential genetic information and population collapse, an effect known as the \"error catastrophe.\" We explain how crossing this threshold, as a result of increasing mutation rates, can be understood as a second-order phase transition, even in the presence of lethal mutations. In particular, we show that, in fitness landscapes with a single peak, this collapse is equivalent to a ferroparamagnetic transition, where the back-mutation rate plays the role of the external magnetic field. We then generalize this framework to rugged fitness landscapes, like the ones that arise from epistatic interactions, and provide numerical evidence that there is a transition from a high average fitness regime to a low average fitness one, similarly to single-peaked landscapes. The onset of the transition is heralded by a sudden change in the susceptibility to variations in the mutation rate. We use insight from replica symmetry breaking mechanisms in spin glasses, in particular by considering the fluctuations of the genotype similarity distribution as the order parameter.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054412"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847226","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

Planar network statistics for two-dimensional rupturing foams. 二维破裂泡沫的平面网络统计。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054609

Joseph Klobusicky, Elif Onat, Vasilios Konstantinou

引用次数: 0

Legislative rebellions and impeachments in a neural network society. 神经网络社会中的立法叛逆与弹劾。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054110

Juan Neirotti, Nestor Caticha

{"title":"Legislative rebellions and impeachments in a neural network society.","authors":"Juan Neirotti, Nestor Caticha","doi":"10.1103/PhysRevE.110.054110","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054110","url":null,"abstract":"Inspired by studies of legislative-executive conflict in modern presidential democracies in South America, we present an agent-based statistical mechanics exploration of the collective, coordinated action of strategic political actors in the legislative chamber and the conditions that may result in premature changes in the executive officeholder, such as a president's impeachment or a motion of no confidence in a prime minister. The legislative actors are represented by information processing agents equipped with a neural network, and emit opinions about issues in the presidential agenda. We construct a Hamiltonian which is the sum of the costs for the agents to hold a specific set of political positions. We use replica methods for two types of disorder, in the space of weights and in the network of agents' interactions. We obtain the phase diagram of the model, where the control parameters may be loosely described as indices measuring the strategic legislative support, the presidential polling popularity and the volume of the presidential agenda under discussion. It shows an intermediate phase of coexistence of pro and con strategic behavior. This region is surrounded by pure phases where the strategic vote falls completely in the pro or con camps. Driven by external forces, the change of these indices may lead the system out of the coexistence region into the purely anti-executive phase, triggering a phase transition into a state opposing the executive leader and supporting their removal from office by constitutional means. We use data from Brazil, and show the presidential trajectories that led to impeachment or not during the democratic period which began in 1989. These trajectories ended in the region of the phase diagram in accordance to the president being removed or not from office.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054110"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847383","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 search with resetting in heterogeneous environments. 异构环境下带重置的随机搜索。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054111

Luiz Menon, Celia Anteneodo

引用次数: 0

Master-slave coupling scheme for synchronization and parameter estimation in the generalized Kuramoto-Sivashinsky equation. 广义Kuramoto-Sivashinsky方程同步与参数估计的主从耦合方案。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054206

Joaquín Miguez, Harold Molina-Bulla, Inés P Mariño

{"title":"Master-slave coupling scheme for synchronization and parameter estimation in the generalized Kuramoto-Sivashinsky equation.","authors":"Joaquín Miguez, Harold Molina-Bulla, Inés P Mariño","doi":"10.1103/PhysRevE.110.054206","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054206","url":null,"abstract":"The problem of estimating the constant parameters of the Kuramoto-Sivashinsky (KS) equation from observed data has received attention from researchers in physics, applied mathematics, and statistics. This is motivated by the various physical applications of the equation and also because it often serves as a test model for the study of space-time pattern formation. Remarkably, most existing inference techniques rely on statistical tools, which are computationally very costly yet do not exploit the dynamical features of the system. In this paper, we introduce a simple, online parameter estimation method that relies on the synchronization properties of the KS equation. In particular, we describe a master-slave setup where the slave model is driven by observations from the master system. The slave dynamics are data-driven and designed to continuously adapt the model parameters until identical synchronization with the master system is achieved. We provide a simple analysis that supports the proposed approach and also present and discuss the results of an extensive set of computer simulations. Our numerical study shows that the proposed method is computationally fast and also robust to initialization errors, observational noise, and variations in the spatial resolution of the numerical scheme used to integrate the KS equation.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054206"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847371","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