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Spin-S Ising models with multispin interactions on the one-dimensional chain and two-dimensional square lattice. 一维链和二维方晶格上具有多自旋相互作用的自旋- s - Ising模型。
IF 2.2 3区 物理与天体物理
Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024132
Kohei Suzuki
{"title":"Spin-S Ising models with multispin interactions on the one-dimensional chain and two-dimensional square lattice.","authors":"Kohei Suzuki","doi":"10.1103/PhysRevE.111.024132","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024132","url":null,"abstract":"<p><p>We study spin-S Ising models with p-spin interactions on the one-dimensional chain and the two-dimensional square lattice. Here, S denotes the magnitude of the spin and p represents the number of spins involved in each interaction. The analysis is performed for S=1/2,1,3/2,2, and p=3,4,5. For the one-dimensional model, we formulate transfer matrices and numerically diagonalize them to analyze the temperature dependence of the free energy and spin-spin correlations. In the case of S=1/2, the free energy does not depend on p, and the spin-spin correlations are uniformly enhanced across all temperature scales as p increases. In contrast, for S≥1, the free energy varies with p, and the spin-spin correlations are significantly enhanced at lower temperatures as p increases. For the two-dimensional model, by using multicanonical simulations, we analyze physical quantities such as an order parameter, internal energy, and specific heat. In addition, we define and examine an order parameter to distinguish ordered and disordered phases. It is found that a first-order phase transition occurs at finite temperatures for all S and p≥3, and increasing p strengthens its nature. We present S and p dependence of the transition temperature and latent heat, and discuss effects of higher-order interactions on the nature of phase transitions.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024132"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659274","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
Numerical investigation of acoustic radiation force and microstreaming in a viscoelastic fluid. 粘弹性流体中声辐射力和微流的数值研究。
IF 2.2 3区 物理与天体物理
Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.025102
Khemraj Gautam Kshetri, Andrew Cook, Nitesh Nama
{"title":"Numerical investigation of acoustic radiation force and microstreaming in a viscoelastic fluid.","authors":"Khemraj Gautam Kshetri, Andrew Cook, Nitesh Nama","doi":"10.1103/PhysRevE.111.025102","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025102","url":null,"abstract":"<p><p>We present a numerical model to study time-averaged acoustic radiation force and microstreaming around an elastic sphere immersed within an acoustically actuated viscoelastic fluid. We employ a perturbation approach to systematically identify limiting regimes where the viscoelastic fluid can be approximated as a purely viscous fluid at the acoustic and mean time scales. Unlike existing numerical models, we account for microstreaming and fluid elasticity contributions to the radiation force. We elucidate the inherent assumptions within reduced expressions considered in prior numerical models and highlight the divergence between the acoustic radiation force obtained from the reduced and general expressions. We also discuss numerical considerations to ensure the invariance of the acoustic radiation force with the choice of integration surface by recasting the time-averaged mass balance equation in terms of Stokes drift. Our results reveal that the acoustic radiation force exhibits a peak value for an optimal relaxation time, and both the peak acoustic radiation force and the optimal relaxation time increase with increasing polymer viscosity. The results also highlight the significant contribution of fluid elasticity to the radiation force and invalidate the previously employed reduced acoustic radiation force expressions for general viscoelastic regime.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025102"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659336","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
Similarity learning with neural networks. 神经网络的相似性学习。
IF 2.2 3区 物理与天体物理
Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.025106
G Sanfins, F Ramos, D Naiff
{"title":"Similarity learning with neural networks.","authors":"G Sanfins, F Ramos, D Naiff","doi":"10.1103/PhysRevE.111.025106","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025106","url":null,"abstract":"<p><p>In this work, we introduce a neural network algorithm designed to automatically identify similarity relations from data. By uncovering these similarity relations, our network approximates the underlying physical laws that relate dimensionless quantities to their dimensionless variables and coefficients. Additionally, we develop a linear algebra framework, accompanied by code, to derive the symmetry groups associated with these similarity relations. While our approach is general, we illustrate its application through examples in fluid mechanics, including laminar Newtonian and non-Newtonian flows in smooth pipes, as well as turbulent flows in both smooth and rough pipes. Such examples are chosen to highlight the framework's capability to handle both simple and intricate cases, and further validate its effectiveness in discovering underlying physical laws from data.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025106"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659407","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
Glassy dynamics in a glass-forming liquid: A first-principles study of toluene. 玻璃形成液体中的玻璃动力学：甲苯的第一性原理研究。
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.L023401
Florian Pabst, Stefano Baroni
{"title":"Glassy dynamics in a glass-forming liquid: A first-principles study of toluene.","authors":"Florian Pabst, Stefano Baroni","doi":"10.1103/PhysRevE.111.L023401","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.L023401","url":null,"abstract":"<p><p>The microscopic understanding of the dramatic increase in viscosity of liquids when cooled toward the glass transition is a major unresolved issue in condensed matter physics. Here, we use machine learning methods to accelerate molecular dynamics simulations with first-principles accuracy for the glass-former toluene. We show that the increase in viscosity is intimately linked to the increasing number of dynamically correlated molecules N^{*}. While certain hallmark features of glassy dynamics, like physical aging, are linked to N^{*} as well, others, like relaxation stretching, are not.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2","pages":"L023401"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659170","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
First-order transition and marginal critical behavior in a two-dimensional frustrated Ising model with efficient tensor-network implementation. 具有有效张量网络实现的二维受挫Ising模型的一阶跃迁和边缘临界行为。
IF 2.2 3区 物理与天体物理
Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024109
Christophe Chatelain
{"title":"First-order transition and marginal critical behavior in a two-dimensional frustrated Ising model with efficient tensor-network implementation.","authors":"Christophe Chatelain","doi":"10.1103/PhysRevE.111.024109","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024109","url":null,"abstract":"<p><p>The phase diagram of a two-dimensional frustrated Ising model with both anti-ferromagnetic and ferromagnetic couplings is studied using tensor network renormalization group techniques. This model can be seen as two antiferromagnetic Ising replicas coupled by nonlocal spin-spin interactions, designed in such a way that the continuum limit matches that of the still-debated J_{1}-J_{2} model and induces a marginal critical behavior. Our model has the advantage of having more symmetries than the J_{1}-J_{2} model and of allowing a more straightforward implementation of tensor network renormalization group algorithms. We demonstrate the existence of two transition lines, featuring both first- and second-order regimes. In the latter, the central charge and the critical exponents are shown to be compatible with the Ashkin-Teller universality class. This picture is consistent with that given by Monte Carlo simulations of the J_{1}-J_{2} model but not with recent studies with tensor network techniques.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024109"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143658795","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
Attosecond gamma-ray flashes and electron-positron pairs in dyadic laser interaction with microwire. 双进激光与微线相互作用中的阿秒伽玛射线闪光和电子-正电子对。
IF 2.2 3区 物理与天体物理
Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.025201
P Hadjisolomou, T M Jeong, P Valenta, A J Macleod, R Shaisultanov, C P Ridgers, S V Bulanov
{"title":"Attosecond gamma-ray flashes and electron-positron pairs in dyadic laser interaction with microwire.","authors":"P Hadjisolomou, T M Jeong, P Valenta, A J Macleod, R Shaisultanov, C P Ridgers, S V Bulanov","doi":"10.1103/PhysRevE.111.025201","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025201","url":null,"abstract":"<p><p>The interaction of an ultra-intense laser with matter is an efficient source of high-energy particles, with efforts directed toward narrowing the divergence and simultaneously increasing the brightness. In this paper we report on emission of highly collimated, ultrabright, attosecond γ-photons and generation of dense electron-positron pairs via a tunable particle generation scheme, which utilizes the interaction of two high-power lasers with a thin wire target. Irradiating the target with a radially polarized laser pulse first produces a series of high charge, short duration, electron bunches with low transverse momentum. These electron bunches subsequently collide with a counter-propagating high-intensity laser. Depending on the intensity of the counter-propagating laser, the scheme generates highly collimated ultra-bright GeV-level γ-beams and/or electron-positron plasma of solid density level.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025201"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143658963","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
Probabilistic approach for estimation of binding rate constants for clusters of targets. 一种估计目标簇结合速率常数的概率方法。
IF 2.2 3区 物理与天体物理
Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024401
Boris P Belotserkovskii
{"title":"Probabilistic approach for estimation of binding rate constants for clusters of targets.","authors":"Boris P Belotserkovskii","doi":"10.1103/PhysRevE.111.024401","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024401","url":null,"abstract":"<p><p>The binding rate constant for a target within a cluster of targets is smaller than for an isolated target due to competition between the targets; and the magnitude of this decrease in the binding rate constant depends upon the shape and the size of the cluster. We obtain a general formula for binding rate constants for clusters of arbitrary shapes and sizes using an approach based upon probabilities to visit a certain domain in space by a searching particle. We applied this result to various shapes of clusters including a spherical shell, a straight line, a random coil, and a random \"cloud.\" Our results could be applicable for targets localized on natural and artificial particles (e.g., receptors on the surfaces of living cells, and macro- and small molecules attached to magnetic beads) and to the target localized on polymers (e.g., DNA or RNA).</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024401"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659180","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
Microscopic and stochastic simulations of chemically active droplets. 化学活性液滴的微观和随机模拟。
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.L023403
Roxanne Berthin, Jacques D Fries, Marie Jardat, Vincent Dahirel, Pierre Illien
{"title":"Microscopic and stochastic simulations of chemically active droplets.","authors":"Roxanne Berthin, Jacques D Fries, Marie Jardat, Vincent Dahirel, Pierre Illien","doi":"10.1103/PhysRevE.111.L023403","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.L023403","url":null,"abstract":"<p><p>Biomolecular condensates play a central role in the spatial organization of living matter. Their formation is now well understood as a form of liquid-liquid phase separation that occurs very far from equilibrium. For instance, they can be modeled as active droplets, where the combination of molecular interactions and chemical reactions result in microphase separation. However, so far, models of chemically active droplets are spatially continuous and deterministic. Therefore, the relationship between the microscopic parameters of the models and some crucial properties of active droplets (such as their polydispersity, their shape anisotropy, or their typical lifetime) is yet to be established. In this work, we address this question computationally, using Brownian dynamics simulations of chemically active droplets: the building blocks are represented explicitly as particles that interact with attractive or repulsive interactions, depending on whether they are in a droplet-forming state or not. Thanks to this microscopic and stochastic view of the problem, we reveal how driving the system away from equilibrium in a controlled way determines the fluctuations and dynamics of active emulsions.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2","pages":"L023403"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659240","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
Ordering spontaneous flows and aging in active fluids depositing tracks. 活性流体沉积轨迹的自发流动和老化排序。
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.L023405
Samuel Bell, Joseph Ackermann, Ananyo Maitra, Raphael Voituriez
{"title":"Ordering spontaneous flows and aging in active fluids depositing tracks.","authors":"Samuel Bell, Joseph Ackermann, Ananyo Maitra, Raphael Voituriez","doi":"10.1103/PhysRevE.111.L023405","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.L023405","url":null,"abstract":"<p><p>Growing experimental evidence shows that cell monolayers can induce long-lived perturbations to their environment, akin to footprints, which in turn influence the global dynamics of the system. Inspired by these observations, we propose a comprehensive theoretical framework to describe systems where an active field dynamically interacts with a non-advected footprint field, deposited by the active field. We derive the corresponding general hydrodynamics for both polar and nematic fields. Our findings reveal that the dynamic coupling to a footprint field induces remarkable effects absent in classical active hydrodynamics, such as symmetry-dependent modifications to the isotropic-ordered transition, alterations in spontaneous flow transitions, and initial condition-dependent aging dynamics characterized by long-lived transient states. Our results suggest that footprint deposition could be a key mechanism determining the dynamical phases of cellular systems, or more generally active systems inducing long-lived perturbations to their environment.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2","pages":"L023405"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659244","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
Three-state random energy model. 三态随机能量模型。
IF 2.2 3区 物理与天体物理
Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024129
Sumedha, Matteo Marsili
{"title":"Three-state random energy model.","authors":"Sumedha, Matteo Marsili","doi":"10.1103/PhysRevE.111.024129","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024129","url":null,"abstract":"<p><p>We introduce a spin-1 version of the random energy model with a crystal field. The crystal field controls the density of 0 spins in the system. We solve the model in the microcanonincal ensemble. The model has a spin-glass transition at a finite temperature for all strengths of the crystal field. By introducing the magnetic field we also obtain the de Almeida-Thouless line for the model. The spin-glass transition persists in the presence of an external field. We also find that the magnetization shows nonmonotonic behavior for high positive crystal field strengths. The zero magnetic field specific heat and magnetic susceptibility also exhibit a cusp beyond a threshold value of the crystal field.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024129"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659248","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
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