Physical Review E最新文献

Probing the mesoscopics of competing interactions with the thermodynamic curvature: The case of a two-parameter axial next-nearest-neighbor Ising chain.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-03-01 DOI: 10.1103/PhysRevE.111.L022105

Soumen Khatua, Anurag Sahay

引用次数: 0

Dynamics of fluid-driven fractures across material heterogeneities.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-03-01 DOI: 10.1103/PhysRevE.111.025504

Sri Savya Tanikella, Marie C Sigallon, Emilie Dressaire

{"title":"Dynamics of fluid-driven fractures across material heterogeneities.","authors":"Sri Savya Tanikella, Marie C Sigallon, Emilie Dressaire","doi":"10.1103/PhysRevE.111.025504","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025504","url":null,"abstract":"Fracture propagation is highly sensitive to the conditions at the crack tip. In heterogeneous materials, microscale obstacles can cause propagation instabilities. Macroscopic heterogeneities modify the stress field over scales larger than the tip region. Here we experimentally investigate the propagation of fluid-driven fractures through multilayered materials. We focus on analyzing fracture profiles formed upon injection of a low-viscosity fluid into a two-layer hydrogel block. Experimental observations highlight the influence of the originating layer on fracture dynamics. Fractures that form in the softer layer are confined, with no penetration in the stiffer layer. Conversely, fractures initiated within the stiffer layer experience rapid fluid transfer into the softer layer when reaching the interface. We report the propagation dynamics and show that it is controlled by the toughness contrast between neighboring layers, which drives fluid flow. We model the coupling between elastic deformation, material toughness, and volume conservation. After a short transient regime, scaling arguments capture the dependence of the fracture geometry on material properties, injection parameters, and time. These results show that stiffness contrast can modify fracture propagation over large length scales and demonstrate the importance of macroscopic scale heterogeneities on fracture dynamics. These results have implications for climate change mitigation strategies involving the storage of heat and carbon dioxide in stratified underground rock formations.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025504"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659153","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

Energy-momentum-conserving stochastic differential equations and algorithms for the nonlinear Landau-Fokker-Planck equation.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-03-01 DOI: 10.1103/PhysRevE.111.025211

Yichen Fu, Justin R Angus, Hong Qin, Vasily I Geyko

引用次数: 0

Effects of drag coefficients on substrate-based cell motility. 阻力系数对基底细胞运动的影响

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024405

Xuan-Lin Chen

引用次数: 0

Patterns of link reciprocity in directed, signed networks.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024312

Anna Gallo, Fabio Saracco, Renaud Lambiotte, Diego Garlaschelli, Tiziano Squartini

{"title":"Patterns of link reciprocity in directed, signed networks.","authors":"Anna Gallo, Fabio Saracco, Renaud Lambiotte, Diego Garlaschelli, Tiziano Squartini","doi":"10.1103/PhysRevE.111.024312","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024312","url":null,"abstract":"Most of the analyses concerning signed networks have focused on balance theory, hence identifying frustration with undirected, triadic motifs having an odd number of negative edges; much less attention has been paid to their directed counterparts. To fill this gap, we focus on signed, directed connections, with the aim of exploring the notion of frustration in such a context. When dealing with signed, directed edges, frustration is a multifaceted concept, admitting different definitions at different scales: if we limit ourselves to consider cycles of length 2, frustration is related to reciprocity, i.e., the tendency of edges to admit the presence of partners pointing in the opposite direction. As the reciprocity of signed networks is still poorly understood, we adopt a principled approach for its study, defining quantities and introducing models to consistently capture empirical patterns of the kind. In order to quantify the tendency of empirical networks to form either mutualistic or antagonistic cycles of length 2, we extend the exponential random graph framework to binary, directed, signed networks with global and local constraints and then compare the empirical abundance of the aforementioned patterns with the one expected under each model. We find that the (directed extension of the) balance theory is not capable of providing a consistent explanation of the patterns characterizing the directed, signed networks considered in this work. Although part of the ambiguities can be solved by adopting a coarser definition of balance, our results call for a different theory, accounting for the directionality of edges in a coherent manner. In any case, the evidence that the empirical, signed networks can be highly reciprocated leads us to recommend to explicitly account for the role played by bidirectional dyads in determining frustration at higher levels (e.g., the triadic one).","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024312"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659157","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

Comparing temporal and aggregated network descriptions of fluid transport in the Mediterranean Sea.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024211

Kishor Acharya, Javier Aguilar, Lorenzo Dall'Amico, Kyriacos Nicolaou, Sandro Meloni, Enrico Ser-Giacomi

{"title":"Comparing temporal and aggregated network descriptions of fluid transport in the Mediterranean Sea.","authors":"Kishor Acharya, Javier Aguilar, Lorenzo Dall'Amico, Kyriacos Nicolaou, Sandro Meloni, Enrico Ser-Giacomi","doi":"10.1103/PhysRevE.111.024211","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024211","url":null,"abstract":"Ocean currents exhibit strong time dependence at all scales that influences physical and biochemical dynamics. Network approaches to fluid transport permit to address explicitly how connectivity across the seascape is affected by the spatiotemporal variability of currents. However, such temporal aspect is mostly neglected, relying on a static representation of the flow. We here investigate the role of current variability on networks describing physical transport across the Mediterranean basin. We first focus on degree distributions and community structure comparing ensembles of temporal networks that explicitly resolve time dependence and their aggregated, i.e., time-averaged, counterparts. Furthermore, we explore the implications of the two approaches in a simple reaction dispersal model for a generic tracer. Our analysis evidences that aggregation induces structural network changes that cannot be easily avoided, not even introducing a pruning of the aggregated adjacency matrix. We also highlight that, depending on the time scales considered, the importance of the temporal features of the networks can vary significantly. Finally, we find that the tracer evolution obtained from a temporal dispersal kernel cannot be always approximated by aggregated adjacency matrices, in particular during transients of the dynamics.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024211"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659535","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

Competing social contagions with opinion-dependent infectivity.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024313

Corbit R Sampson, Juan G Restrepo

{"title":"Competing social contagions with opinion-dependent infectivity.","authors":"Corbit R Sampson, Juan G Restrepo","doi":"10.1103/PhysRevE.111.024313","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024313","url":null,"abstract":"The spread of disinformation (maliciously spread false information) in online social networks has become an important problem in today's society. Disinformation's spread is facilitated by the fact that individuals often accept false information based on cognitive biases which predispose them to believe information that they have heard repeatedly or that aligns with their beliefs. Moreover, disinformation often spreads in direct competition with corresponding true information. To model these phenomena, we develop a model for two competing beliefs spreading on a social network, where individuals have an internal opinion that models their cognitive biases and modulates their likelihood of adopting one of the competing beliefs. By numerical simulations of an agent-based model and a mean-field description of the dynamics, we study how the long-term dynamics of the spreading process depend on the initial conditions for the number of spreaders and the initial opinion of the population. We find that the addition of cognitive biases enriches the transient dynamics of the spreading process, facilitating behavior such as the revival of a dying belief and the overturning of an initially widespread opinion. Finally, we study how external recruitment of spreaders can lead to the eventual dominance of one of the two beliefs.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024313"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659536","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

Sensitivity of the dynamic-shell target to laser drive nonuniformities.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.025210

William Trickey, T J B Collins, I V Igumenshchev, V N Goncharov, A Shvydky

{"title":"Sensitivity of the dynamic-shell target to laser drive nonuniformities.","authors":"William Trickey, T J B Collins, I V Igumenshchev, V N Goncharov, A Shvydky","doi":"10.1103/PhysRevE.111.025210","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025210","url":null,"abstract":"The dynamic-shell concept for inertial confinement fusion (ICF) uses an initially homogeneous target and a carefully shaped laser pulse to form a shell and implode it. The laser pulse consists of a series of pickets that drive shocks into the target. The first few shocks converge inwards and rebound from the center of the target, creating an expanding, low-density plasma. Subsequent shocks are launched into the expanding plasma and eventually coalesce to form a shell, which is then imploded with a traditional ICF laser pulse. This study describes radiation-hydrodynamic simulations that investigate the sensitivity of dynamic-shell targets to imperfections in the laser drive. A one-dimensional (1D) study looks at mistiming and power variations in the pickets and a two-dimensional (2D) study examines irradiation perturbations imposed by the laser-beam geometry. Simulations show that less than ∼2% power imbalance or 200 ps timing variation in the pickets is sufficient to keep the yield above 90% of the maximum. Additionally, the 2D simulations show that 72 or more beams are required to keep irradiation nonuniformities low enough to obtain fusion yields close to that of 1D simulations.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025210"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659392","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

Describing self-organized criticality as a continuous phase transition.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024111

S S Manna

引用次数: 0

Unitary description of the Jaynes-Cummings model under fractional-time dynamics.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024110

Danilo Cius

引用次数: 0