Physical review. E最新文献_第2页

Variational approach to Yukawa fluids. II. Instantaneous elastic moduli and sound velocities. 汤川流体的变分方法。2。瞬时弹性模量和声速。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/gt7y-s7wk

S A Khrapak, A G Khrapak

引用次数: 0

Access-limited equilibration and observable-dependent relaxation in lattice-gas systems. 晶格-气体系统中的受限平衡和可观测依赖弛豫。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/zsb5-pchp

Marvin A Albao

{"title":"Access-limited equilibration and observable-dependent relaxation in lattice-gas systems.","authors":"Marvin A Albao","doi":"10.1103/zsb5-pchp","DOIUrl":"https://doi.org/10.1103/zsb5-pchp","url":null,"abstract":"We investigate equilibration dynamics in a lattice-gas model with spatially restricted coupling to a particle reservoir. Using kinetic Monte Carlo simulations, we isolate the role of reservoir-access geometry by comparing spatially uniform exchange with exchange confined to a limited access region while keeping the thermodynamics and diffusion kinetics fixed. Under uniform access, equilibration is diffusion controlled, and relaxation times increase monotonically with diffusion barrier. In contrast, restricted access introduces an additional kinetic bottleneck without altering the final equilibrium state. The resulting slowdown is nonmonotonic: it is most pronounced at intermediate diffusion barriers, where reservoir access and internal diffusion compete, and weakens when intrinsic diffusion becomes the dominant limitation. Under these conditions, equilibration also becomes observable dependent. Coarse observables such as total coverage can suggest stationarity on a different timescale from internal configurational observables such as the fractional occupation f_{O}(t). Sensitivity tests of the stationarity criterion and finite-size checks confirm that the restricted-access delay is not an artifact of the numerical equilibration definition or lattice size. These results show that reservoir accessibility can act as an independent kinetic control parameter, generating delayed and observable-dependent relaxation even when equilibrium thermodynamics remain unchanged.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"114 1-1","pages":"014124"},"PeriodicalIF":2.4,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148796587","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

Finite-size scaling to resolve spurious multifractality in the two-dimensional Ising model. 解决二维Ising模型中虚假多重分形的有限尺寸缩放。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/23vj-5v8c

S Jaroszewicz, N Mendez, Maria P Beccar-Varela, Maria Cristina Mariani

{"title":"Finite-size scaling to resolve spurious multifractality in the two-dimensional Ising model.","authors":"S Jaroszewicz, N Mendez, Maria P Beccar-Varela, Maria Cristina Mariani","doi":"10.1103/23vj-5v8c","DOIUrl":"https://doi.org/10.1103/23vj-5v8c","url":null,"abstract":"Multifractal detrended fluctuation analysis has emerged as a standard tool for characterizing scale invariance in complex systems, yet its application to discrete spin models is frequently marred by reports of \"spurious multifractality\" that contradict established theory. In this work, we resolve this controversy by establishing a rigorous protocol for the analysis of discrete lattice snapshots. Using the two-dimensional Ising model as a benchmark, we demonstrate that the previously reported broad singularity spectra are finite-size artifacts dominated by lattice discreteness effects in the negative moment regime (q<0). By restricting the analysis to positive moments and performing a systematic finite-size scaling (FSS) analysis, we show that the spectral width collapses to zero (Δα→0) in the thermodynamic limit. The method accurately recovers the monofractal exponent of the Ising universality class (α≈H≈0.875), consistent with conformal field theory. Applying this FSS protocol to the random bond Ising model, we reveal that the broad multifractal dispersion often attributed to quenched disorder also flattens systematically with increasing system size. These results demonstrate that apparent multifractality in finite discrete lattices is predominantly driven by preasymptotic discreteness artifacts, underscoring the universal necessity of FSS to avoid false positives in statistical mechanics.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"114 1-1","pages":"014139"},"PeriodicalIF":2.4,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148796636","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

Control protocols for harmonically confined run-and-tumble particles. 谐波约束流动和翻滚粒子的控制方案。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/rspp-2334

Marco Baldovin, Alessandro Manacorda

引用次数: 0

First-passage times for the space-fractional Fokker-Planck equation. 空间分数Fokker-Planck方程的首次通过时间。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/mk65-8dq2

Christopher N Angstmann, Daniel S Han, Bruce I Henry, Boris Z Huang

引用次数: 0

Convection patterns in nonequilibrium Kawasaki dynamics at low temperature. 低温非平衡川崎动力学中的对流模式。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/r6d8-bcd1

Meander Van den Brande, Kyosuke Adachi, François Huveneers

引用次数: 0

Nonmonotonic percolation threshold in correlated networks and hypergraphs. 相关网络和超图中的非单调渗透阈值。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/bvsj-7pmq

L D Valdez, C E La Rocca

引用次数: 0

Phase transition from localization to chaos in a classical many-body system. 经典多体系统从局域到混沌的相变。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/6y6k-35l9

Yusuf Kasim, Pavel Orlov, Tomaž Prosen

{"title":"Phase transition from localization to chaos in a classical many-body system.","authors":"Yusuf Kasim, Pavel Orlov, Tomaž Prosen","doi":"10.1103/6y6k-35l9","DOIUrl":"https://doi.org/10.1103/6y6k-35l9","url":null,"abstract":"We report a dynamical phase transition in the information spreading within a classical 2D deterministic interacting many-body system. Specifically, the transition is observed in a recently introduced momentum-conserving parity check cellular automaton (MCPCA) on the square lattice [Kasim and Prosen, Phys. Rev. Res. 7, 023230 (2025)2643-156410.1103/PhysRevResearch.7.023230]. We characterize the transition using information-theoretic quantities such as the Hamming distance and the classical decorrelator. By introducing conserved local charges of the momentum-conserving parity-check cellular automata, we show that selecting initial ensembles with specific charge values allows the system to transition from a localized information phase to a chaotic regime with ballistic information spreading. Importantly, our findings indicate that this transition is of second order, highlighting a sharp change in information spreading behavior. Furthermore, we revisit the multifractal behavior of the dynamical structure factor and show that, although present across both phases, it originates from effective local periodicities enforced by symmetry constraints.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"114 1-1","pages":"014140"},"PeriodicalIF":2.4,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148796749","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

Optogenetic synchronization in excitable media by induced Archimedean spiral. 诱导阿基米德螺旋在可激发介质中的光遗传同步。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/tjdc-g3cl

Qi-Hao Li, Song Han, Yin-Jie He, Yuan-Hui Zhao, Bing-Wei Li, Hans Dierckx, Alexander V Panfilov, Teng-Chao Li

{"title":"Optogenetic synchronization in excitable media by induced Archimedean spiral.","authors":"Qi-Hao Li, Song Han, Yin-Jie He, Yuan-Hui Zhao, Bing-Wei Li, Hans Dierckx, Alexander V Panfilov, Teng-Chao Li","doi":"10.1103/tjdc-g3cl","DOIUrl":"https://doi.org/10.1103/tjdc-g3cl","url":null,"abstract":"Abnormal propagation of electrical excitation waves underlies the development of many cardiac arrhythmias. Optogenetics offers a powerful means to precisely manipulate cardiac excitation dynamics. Previous optogenetic control strategies have primarily relied on projecting light patterns that directly mimic wave activity in the studied excitable medium. In this study, we propose a geometry-guided strategy based on synthetic Archimedean spiral line illumination. We demonstrate that this method not only enables effective synchronization of excitation patterns, but also provides a systematic way to study the influence of illumination frequency and wavelength of the projected pattern on synchronization. Our computational analysis is performed in both two- and three-dimensional media using the Bär reaction-diffusion model. We examine both depolarizing and hyperpolarizing modes of optogenetic control, which have previously received very limited attention. Depolarizing illumination achieves synchronization by inducing new wave fronts, whereas hyperpolarizing illumination operates through the formation of dynamic repolarization barriers. Importantly, both mechanisms remain robust under realistic conditions, including optical attenuation and pathological fibrotic remodeling. In summary, this work introduces a biophysically grounded, geometry-driven optogenetic control paradigm for the synchronization and suppression of electrical turbulence in excitable media, laying the foundation for potential future applications in cardiac tissue.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"114 1-1","pages":"014208"},"PeriodicalIF":2.4,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148796797","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

Hydrodynamic origin of Korteweg stresses from shear-induced horizontal buoyancy. 剪切诱导水平浮力下Korteweg应力的水动力来源。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2026-07-01 DOI: 10.1103/vckp-dcmf

Prabakaran Rajamanickam

{"title":"Hydrodynamic origin of Korteweg stresses from shear-induced horizontal buoyancy.","authors":"Prabakaran Rajamanickam","doi":"10.1103/vckp-dcmf","DOIUrl":"https://doi.org/10.1103/vckp-dcmf","url":null,"abstract":"A recent study [P. Rajamanickam, Q. J. Mech. Appl. Math. 78, hbaf007 (2025)1464-385510.1093/qjmam/hbaf007] of non-Boussinesq fluids in narrow channels identified a novel shear-induced horizontal buoyancy force that emerges upon depth-averaging the Navier-Stokes equations. This Letter demonstrates that this force is formally equivalent to the divergence of a Korteweg stress tensor. Unlike classical Korteweg stresses, which are typically attributed to molecular-scale cohesive potentials or implemented through assumed constitutive relations, we show that this emergent stress arises purely from self-coupled transport where the internal Ostroumov flow is kinematically coupled to the local density gradient. We derive explicit expressions for the effective stress coefficients, revealing a fundamental dependence on the Prandtl number and Grashof number. This correspondence is contrasted with classical Taylor dispersion, where the absence of self-coupling yields only a uniaxial stress. Although derived within a narrow-channel framework, our results establish a general hydrodynamic template for how quadratic gradient stresses can emerge from subscale, self-coupled flows, such as Marangoni or active-matter flows, offering a continuous transport-driven alternative to molecular mechanisms.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"114 1","pages":"L013102"},"PeriodicalIF":2.4,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148796809","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