Physical Review E最新文献

{"title":"Vibrational transportation of deformable axisymmetric particles.","authors":"Marina E Terzi, Vladislav V Aleshin, Jules Ghesquiere, Vincent Tournat","doi":"10.1103/l37t-1qtp","DOIUrl":"https://doi.org/10.1103/l37t-1qtp","url":null,"abstract":"<p><p>A particle on a substrate supporting a surface acoustic wave can experience horizontal drift excited by the dry friction force. The effect is referred to as vibrational transportation, or as a surface acoustic wave motor, and is used in a number of industrial applications. A traditional theory of vibrational transportation considers a particle as a material point moving on a rigid substrate. A more realistic representation is a contact model based on Cattaneo-Mindlin (also called Hertz-Mindlin) mechanics applicable to an axisymmetric deformable particle. The contact zone in this case is not a point but rather a circle that generally contains a smaller circle of stick and a surrounding annulus of slip. A recent semianalytical extension of the Cattaneo-Mindlin solution called the method of memory diagrams allows one to compute the hysteretic friction force for an arbitrary loading history in terms of contact displacements and, subsequently, to numerically solve the equations of motion. Depending on the materials' and excitation parameters, the particle can stay in permanent contact with the substrate or experience multiple jumps. In the former case, the particle can drift in a horizontal direction due to asymmetric sliding condition created by oscillating normal and tangential contact forces. In other words, during each wave period, the particle advances and recedes with different efficiencies, which finally results in a drift. The drift can occur in the wave propagation direction and against it and require a specific choice of system's parameters. In the regime of multiple jumps, directed horizontal motion is also possible. However, it is governed by a completely different mechanism based on synchronization between the wave period and rebounding events. There exist cases where the rebound occurs once per period and consistently at the same phase. During each rebound, the particle gets horizontal momentum of the same sign (against the wave propagation direction). The value of this momentum depends on the horizontal velocity mismatch between the particle and the substrate; therefore, at the beginning of the process, the particle moves with an acceleration that decreases and finally disappears. Exactly the same type of motion against the wave has been observed in our preliminary experiments. In other cases, the time of flight of the particle and the wave period are uncorrelated, thus resulting in a chaotic motion. We also demonstrate that a point mass in the same situation behaves differently. In particular, in a regime of permanent contact, negative and positive sliding are equilibrated, which produces no drift. In addition, multiple rebounds of a point mass are always chaotic, at least for fully conservative collisions. In conclusion, the deformable particle model can be a better guide for various applications, such as particle micropositioning or acoustic dust cleaning.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-2","pages":"025502"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018521","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}

{"title":"Families of planar lattices with arbitrarily high T_{c} for the ferromagnetic Ising model.","authors":"Davidson Noby Joseph, Connor M Walsh, Igor Boettcher","doi":"10.1103/y4zd-dffy","DOIUrl":"https://doi.org/10.1103/y4zd-dffy","url":null,"abstract":"<p><p>We construct families of periodic tessellations of the plane with arbitrarily high critical temperature, T_{c}, for the classical uniform and nearest-neighbor ferromagnetic Ising model. Our approach is motivated by recently found exact bounds, which imply that large values of T_{c} require large values of the maximal coordination number of the lattice, q_{max}. We create such lattices through iterative triangulation and derive explicit expressions for their T_{c}. Furthermore, we show that T_{c} for these families scales asymptotically as T_{c}/J∼Alnq_{max}-2lnlnq_{max} with a universal prefactor A=2/ln2. We introduce a function T_{c}^{*}(q_{max}) that we conjecture to be an upper bound on the critical temperature of any periodic tessellation of the plane. We show that the family of so-called Apollonian lattices, which are derived from the triangular lattice through iterative triangulation, saturates this bound. The lattices discussed in this work are relevant for theoretical questions of optimality in network systems and may be realized experimentally in Coherent Ising Machine or topoelectric circuits in the future.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-1","pages":"024133"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018476","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}

{"title":"Contaminant transport in channel flow with laterally asymmetric velocity distribution and adsorption-desorption dynamics.","authors":"Radha S, Swarup Barik, Sourav Hossain","doi":"10.1103/3kzn-tk5j","DOIUrl":"https://doi.org/10.1103/3kzn-tk5j","url":null,"abstract":"<p><p>This study presents an analytical solution of the two-dimensional concentration distribution of a contaminant in a channel with a prismatic cross-section and asymmetric velocity distribution, influenced by reversible and irreversible reactions, along with the bulk chemical reaction. Recent works by Zhan et al. [J. Hydrol. 632, 130855 (2024)10.1016/j.jhydrol.2024.130855] have shown that weak desorption leads to complex transient dispersion behavior in open-channel flows, with a strong dependence on the initial distribution of contaminants and a delayed response compared to tube flows. Similarly, the present study examines contaminant transport in a channel with a prismatic cross-section and asymmetric velocity profile, incorporating reversible adsorption-desorption and irreversible absorption at the boundaries in both fluid and solid phases. Using Mei homogenization, analytical expressions for two-dimensional concentration up to second order are derived, and the influence of key transport parameters on both mean and two-dimensional concentrations is examined. The findings reveal that increasing the velocity parameters (α, β) sharpens or skews the velocity profile, thus enhancing shear and increasing dispersion. Consequently, the dispersion coefficient D_{T}^{*} varies nonmonotonically, while the mean concentration consistently decreases. Increased boundary absorption and bulk reaction parameters significantly reduce the two-dimensional concentration, while increasing the adsorption or desorption parameters raises the two-dimensional concentration. Increasing adsorption-desorption at the boundaries increases the two-dimensional concentration variation in both symmetric and asymmetric cases. It causes persistent nonuniformity when α≠β, while symmetry (α=β) leads to uniform concentration profiles over time. The findings are crucial to improving the quality of the natural stream, reducing pollution, and mitigating the effects of reactions.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-2","pages":"025103"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018650","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}

{"title":"Continuous family of point vortex lattice equilibria in doubly periodic rectangular domains with a Liouville-type background vorticity.","authors":"Vikas S Krishnamurthy, Takashi Sakajo","doi":"10.1103/1vzq-hvdv","DOIUrl":"https://doi.org/10.1103/1vzq-hvdv","url":null,"abstract":"<p><p>The stationary equilibria of N point vortices in a rectangular domain with doubly periodic boundary conditions offer a foundational framework for understanding the stationary lattices of coherent vortex structures. In this paper, we obtain new continuous families of these lattices. These solutions are constructed using methods from complex analysis including conformal mapping and special function theory. First, the doubly periodic rectangular domain is mapped to an annulus by a conformal mapping. Next, a loxodromic function is used to construct a solution consisting of stationary point vortices embedded in a smooth background vorticity field which is exponentially related to the stream function (Liouville-type background vorticity). This solution contains three continuous parameters, and by considering the limits of one of these parameters, a stationary point vortex solution without a background vorticity field is constructed. Until now, stationary point vortex solutions under doubly periodic boundary conditions have been mainly symmetric. Varying the other two parameters noted above, we generate families of asymmetric stationary point vortex lattices.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-2","pages":"025105"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018633","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}

{"title":"Editorial: Squishy Science Sunday-Recipes for Public Engagement.","authors":"Shubha Tewari, Rae M Robertson-Anderson","doi":"10.1103/PhysRevE.114.020001","DOIUrl":"10.1103/PhysRevE.114.020001","url":null,"abstract":"","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-1","pages":"020001"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018414","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}

{"title":"Identifying maximal sets of significantly interacting nodes in higher-order networks.","authors":"Lorenzo Betti, Federico Musciotto, Federico Battiston, Rosario N Mantegna","doi":"10.1103/t86l-31d5","DOIUrl":"https://doi.org/10.1103/t86l-31d5","url":null,"abstract":"<p><p>Filtering methods are fundamental tools for extracting the backbone of complex networks. Systems displaying group interactions, however, open the way to new types of filtering approaches. Here, we introduce a statistical filtering method for higher-order networks that identifies statistically validated maximal interacting sets-maximal sets of nodes that consistently interact together within group interactions. Using properly designed benchmarks, we show that our approach is highly effective in systems where the maximal sets are likely to be diluted into interactions of larger sizes that include occasional participants. Applications to real-world data reveal that the identified sets of nodes are characterized by higher levels of similarity and topical coherence, highlighting the ability of our method to provide new insights on the organization of real-world higher-order networks.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-1","pages":"024313"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018383","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}

{"title":"Probability-current reorganization lowers the cost of finite-time Brownian erasure.","authors":"Kaiming Luo","doi":"10.1103/4nmm-611j","DOIUrl":"https://doi.org/10.1103/4nmm-611j","url":null,"abstract":"<p><p>Finite-time information erasure is governed by probability transport through configuration space, not only by final logical populations. We show that a two-dimensional Brownian memory can lower fast-erasure cost by reorganizing probability currents through a transverse degree of freedom. Using physics-informed routing control (PIRC), we optimize conservative protocols at fixed erasure time and final-error criterion, and compare them with tilt-only and static minimum-energy-path (MEP) constrained driving. Constrained scans over transverse-gate strength reveal two regimes: MEP and PIRC enter the target-error band where tilt remains infeasible and, when all three protocols have comparable final error, PIRC has lower entropy production than both baselines. The reduction is not obtained by following the static MEP alone, but by suppressing off-channel dissipation and reshaping the transient current field.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2","pages":"L022108"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018251","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}

{"title":"Magnetic compression and a kinematic signature of surface melting in current-driven metal loads.","authors":"A W Klemmer, S E Kreher, T M Hutchinson, E P Yu, T J Awe, C L Rousculp, D H Dolan, B T Hutsel, K C Yates, K J Swanson, J J Iratcabal, A Dahal, B S Bauer","doi":"10.1103/qxq4-k5xp","DOIUrl":"https://doi.org/10.1103/qxq4-k5xp","url":null,"abstract":"<p><p>In current-driven metal loads, a nonlinear magnetic-diffusion wave carries current and Joule heating inward from the electrical skin-depth layer, coupling the electromagnetic drive to material compression, melting, and expansion. Photon Doppler velocimetry of electrically thick aluminum measures premelt radial magnetic compression of 34.8±2.1 nm and an acceleration transition during surface melting. Interpreted with one-dimensional magnetohydrodynamic calculations, the measured velocity history gives a model-assisted solid-liquid transition duration of 4.5±0.7ns. The result is a validation-relevant surface-motion constraint for integrated current-driven material models, complementary to direct pressure-density-temperature measurements of aluminum.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2","pages":"L023202"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018263","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}

{"title":"Eigenstate condensation in quantum systems with finite-dimensional Hilbert spaces.","authors":"Christopher David White, Michael Winer, Noam Bernstein","doi":"10.1103/wgq9-phxt","DOIUrl":"https://doi.org/10.1103/wgq9-phxt","url":null,"abstract":"<p><p>Random quantum states drawn from the Haar ensemble with a constraint on the energy expectation value E_{av}=〈ψ|H|ψ〉 display eigenstate condensation: For E_{av} below a critical value E_{c-} or above E_{c+}, they develop macroscopic overlap with the ground state or anti-ground state. We use analytical calculations and state-of-the-art numerical methods to investigate the eigenstate condensation phase transition. We give compact expressions for the critical energies, derive an analytical scaling form for the order parameter in systems with an extensive free energy, show that in those systems the phase transition itself has exponential rather than power-law finite-size scaling, and test these results with large-scale numerical sampling in random matrices and a range of local spin Hamiltonians. In local spin systems the two critical energies approach the middle of the spectrum as 1/V with V the number of spins. Our scaling form, however, demonstrates that the condensation phase transitions have exponential, rather than polynomial, finite-size scaling, which justifies treating the high-temperature phase as an extended phase.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-1","pages":"024121"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018348","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}

{"title":"Noise-controlled critical slowing down in forced neural and climate models.","authors":"Dianavinnarasi Joseph, Mithun Kumar, Suresh Kumarasamy, Alexander N Pisarchik","doi":"10.1103/xgjx-nw1j","DOIUrl":"https://doi.org/10.1103/xgjx-nw1j","url":null,"abstract":"<p><p>Slowly forced nonlinear systems are known to exhibit delayed transitions beyond static bifurcation thresholds, a phenomenon that can be substantially modified by additive noise. In this work, we investigate how stochastic fluctuations modulate bifurcation delay and tipping dynamics in two representative models: the FitzHugh-Nagumo (FHN) neuronal excitable system and the Stommel model of Atlantic Meridional Overturning Circulation collapse. Both systems are analyzed within a unified first-passage framework. For the FHN model, we combine deterministic delay scaling with channel-resolved first-passage statistics and eigenvector-based noise projection. Our analysis reveals that noise acting on the fast and slow variables reduces the bifurcation delay through qualitatively distinct mechanistic pathways. Fast-variable noise induces a sharp onset window for pre-Hopf activation, whereas slow-variable noise acts via projection onto the slow manifold over the relaxation timescale, producing a broader onset region in the phase map. These differences give rise to distinct rate-noise crossover regimes that reflect the underlying geometry of the attractor. For the stochastic Stommel model, the same first-passage framework identifies a sharp crossover from delayed tipping to noise-induced early collapse. Near the crossover noise amplitude, the mean delay (-2.9 yr), median delay (3.4 yr), and interquartile range (2.05 kyr) provide markedly different characterizations of the same first-passage distribution. This striking discrepancy exposes the limitations of single-statistic summaries in saddle-node geometries and underscores the need for multistatistical descriptions of tipping times. Across both systems, we construct rate-noise phase maps and first-passage observables that establish a common basis for comparing delayed Hopf bifurcations (oscillation onset) with delayed saddle-node bifurcations (circulation collapse). The analytical framework developed here, including delay scaling laws, activation windows, and crossover estimates, is directly testable against numerical simulations and is readily extendable to other slowly forced bifurcations, including pitchfork and transcritical cases.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-1","pages":"024223"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018340","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}