Physical Review E最新文献

Diffuse-charge dynamics across a capacitive interface in a dc electric field. 直流电场中电容界面上的扩散电荷动力学。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.055404

Shuozhen Zhao, Bhavya Balu, Zongxin Yu, Michael J Miksis, Petia M Vlahovska

引用次数: 0

Conformal invariance constraints in the O(N) models: A study within the nonperturbative renormalization group. O(N)模型的保形不变性约束：非微扰重整化群内的研究。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.054126

Santiago Cabrera, Gonzalo De Polsi, Nicolás Wschebor

{"title":"Conformal invariance constraints in the O(N) models: A study within the nonperturbative renormalization group.","authors":"Santiago Cabrera, Gonzalo De Polsi, Nicolás Wschebor","doi":"10.1103/PhysRevE.111.054126","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.054126","url":null,"abstract":"The behavior of many critical phenomena at large distances is expected to be invariant under the full conformal group, rather than only isometries and scale transformations. When studying critical phenomena, approximations are often required, and the framework of the nonperturbative, or functional, renormalization group is no exception. The derivative expansion is one of the most popular approximation schemes within this framework, due to its great performance on multiple systems, as evidenced in the past few decades. Nevertheless, it has the downside of breaking conformal symmetry at a finite order. This breaking is not observed at the leading order of the expansion, denoted the local potential approximation, and it only appears once one considers, at least, the next-to-leading order of the derivative expansion [O(∂^{2})] when including composite operators. In this work, we study the constraints arising from conformal symmetry for the O(N) models using the derivative expansion at order O(∂^{2}). We explore various values of N and minimize the breaking of conformal symmetry to fix the nonphysical parameters of the approximation procedure. We compare our prediction for the critical exponents with those coming from a more usual procedure, known as the principle of minimal sensitivity.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 5-1","pages":"054126"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327337","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

Neighbor-induced damage percolation. 邻居引起的损害渗漏。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.054312

Lorenzo Cirigliano, Claudio Castellano

{"title":"Neighbor-induced damage percolation.","authors":"Lorenzo Cirigliano, Claudio Castellano","doi":"10.1103/PhysRevE.111.054312","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.054312","url":null,"abstract":"We consider neighbor-induced damage percolation, a model describing systems where the inactivation of some elements may damage their neighboring active ones, making them unusable. We present an exact solution for the size of the giant usable component (GUC) and the giant damaged component (GDC) in uncorrelated random graphs. We show that even for strongly heterogeneous distributions, the GUC always appears at a finite threshold and its formation is characterized by homogeneous mean-field percolation critical exponents. The threshold is a nonmonotonic function of connectivity: robustness is maximized by networks with finite optimal average degree. We also show that if the average degree is large enough, a damaged phase appears, characterized by the existence of a GDC, bounded by two distinct percolation transitions. The birth and the dismantling of the GDC are characterized by standard percolation critical exponents in networks, except for the dismantling in scale-free networks where new critical exponents are found. Numerical simulations on regular lattices in D=2 show that the existence of a GDC depends not only on the spatial dimension but also on the lattice coordination number.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 5-1","pages":"054312"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327359","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 stochastic resetting: When finding the target is not enough. 随机搜索随机重置：当找到的目标不够时。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.054127

Paul C Bressloff

引用次数: 0

Stochastic heat differences between many-particle and density-field descriptions. 多粒子和密度场描述之间的随机热差。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.054124

Takuya Saito, Yutaka Sumino

引用次数: 0

Universality of the complete-graph Potts model with 0 0<q≤2的完全图Potts模型的通用性。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.054134

Zirui Peng, Sheng Fang, Hao Hu, Youjin Deng

{"title":"Universality of the complete-graph Potts model with 0<q≤2.","authors":"Zirui Peng, Sheng Fang, Hao Hu, Youjin Deng","doi":"10.1103/PhysRevE.111.054134","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.054134","url":null,"abstract":"Universality is a fundamental concept in modern physics. For the q-state Potts model, the critical exponents are merely determined by the order-parameter symmetry S_{q}, spatial dimensionality and interaction range, independent of microscopic details. In a simplest and mean-field treatment, i.e., the Potts model on complete graph (CG), the phase transition is further established to be of percolation universality for the range of 0<q<2. By simulating the CG Potts model in the random-cluster representation, we numerically demonstrate such a hyperuniversality that the critical exponents are the same for 0<q<2 and, moreover, the Ising system (q=2) exhibits a variety of critical geometric properties in percolation universality. On the other hand, many other universal properties in the finite-size scaling (FSS) theory, including Binder-like ratios and distribution function of the order parameter, are observed to be q dependent. Meanwhile, we have made improvements to the Monte Carlo algorithms for efficiently simulating the CG Potts model. Our finding provides valuable insights for the study of critical phenomena in finite spatial dimensions, particularly when the FSS theory is utilized.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 5-1","pages":"054134"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327395","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

Formation mechanism of the complex dynamics in subnormal glow discharge systems: Mixed-mode oscillations and period-adding bifurcation. 亚正常辉光放电系统中复杂动力学的形成机制：混合模式振荡和加周期分岔。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.055202

Zijia Chu, Jingfeng Yao, Chengxun Yuan, Ying Wang, Zhongxiang Zhou, Lin Geng

{"title":"Formation mechanism of the complex dynamics in subnormal glow discharge systems: Mixed-mode oscillations and period-adding bifurcation.","authors":"Zijia Chu, Jingfeng Yao, Chengxun Yuan, Ying Wang, Zhongxiang Zhou, Lin Geng","doi":"10.1103/PhysRevE.111.055202","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.055202","url":null,"abstract":"Mixed-mode oscillation (MMO) is a type of complex dynamic behavior commonly seen in multitimescale dynamical systems. As a typical nonlinear medium, MMOs have been experimentally observed in a variety of plasma systems. However, the underlying microscopic physical mechanisms that are responsible for this complex dynamics are still unclear at present. Based on the strong nonlinear dependence of the Townsend ionization process on the electric field, the causes leading to the emergence of subthreshold small-amplitude oscillations and the corresponding period-adding bifurcation are explored with a one-dimensional, time-dependent, self-consistent plasma fluid model. An in-depth study has been conducted on the spatiotemporal evolution characteristics of plasma parameters under different dynamical states. It has been found that in the current decay phase, the localized avalanches between the cathode and the virtual anode caused by the bulk plasma play a crucial role in shaping the MMO structure within the system. These localized avalanches arise from the combined effects of rapid voltage increases and delayed bulk plasma dissipation. The findings are anticipated to deepen our understanding of the formation mechanism of the MMOs in subnormal discharge systems and provide helpful inspiration in a wide range of spatially dependent nonlinear dissipative physical systems.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 5-2","pages":"055202"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327419","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 near the interpolation transition in deep recurrent networks. 深度循环网络插值过渡附近的玻璃动力学。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.055307

John Hertz, Joanna Tyrcha

{"title":"Glassy dynamics near the interpolation transition in deep recurrent networks.","authors":"John Hertz, Joanna Tyrcha","doi":"10.1103/PhysRevE.111.055307","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.055307","url":null,"abstract":"We examine learning dynamics in deep recurrent networks, focusing on the behavior near the boundary in the depth-width plane separating under- from overparametrized networks, known as the interpolation transition. The training data are Bach chorales in four-part harmony, and the learning is by stochastic gradient descent with a cross-entropy loss function. We find critical slowing down of the learning, approaching the transition from the overparametrized side: For a given network depth, learning times to reach small training loss values appear to diverge proportional to 1/(w-w_{c}) as the width w approaches a (loss-dependent) critical value w_{c}. We identify the zero-loss limit of this value with the interpolation transition. We also study aging (the slowing down of fluctuations as the time since the beginning of learning increases). Taking a system that has been learning for a time τ_{w}, we measure the subsequent mean-square fluctuations of the weight values at times τ>τ_{w}. In the underparametrized phase, we find that they are well-described by a single function of τ/τ_{w}. While this scaling holds approximately at short times at the transition and in the overparametrized phase, it breaks down at longer times when the training loss gets close to the lower limit imposed by the stochastic gradient descent dynamics. Both this kind of aging and the critical slowing down are also found in certain spin glass models, suggesting that those models contain the most essential features of the learning dynamics.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 5-2","pages":"055307"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327420","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

Impact of electrostatic correlations on the frequency response of a graphene electrode in ionic liquid. 静电相关性对离子液体中石墨烯电极频率响应的影响。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.055503

Mahdi Yavarian, Roderick Melnik, Z L Mišković

{"title":"Impact of electrostatic correlations on the frequency response of a graphene electrode in ionic liquid.","authors":"Mahdi Yavarian, Roderick Melnik, Z L Mišković","doi":"10.1103/PhysRevE.111.055503","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.055503","url":null,"abstract":"We investigate the frequency response of the graphene-based electrochemical systems containing room-temperature ionic liquids using the method of matched asymptotic expansion in the limit of thin double-layers to study the diffuse-charge dynamics of graphene electrodes interfaced with the ionic liquids. The theory in the framework of the asymptotic matching is mainly supported by (1) the length scale sqrt[λ_{D}L_{c}] that suitably characterizes the structure of the double layer in ionic liquids, with λ_{D} referring to the Debye length and L_{c} referring to the electrostatic correlation length, and (2) the charging time, τ_{c}=λ_{D}^{3/2}L/(DL_{c}^{1/2}), where D is the diffusion coefficient and L is the thickness of the electrolyte. With this response time, the diffuse-charge dynamics is deduced at the leading order to obtain an analytic expression for low-frequency impedance. As a result of the new length scaling sqrt[λ_{D}L_{c}], we additionally study the behavior of double-layer in graphene-metal electrochemical systems involving ionic liquids, where electrostatic correlation length L_{c} is found to play a prominent role in the linear regime. The results are then compared with the conventional electrochemical cells containing a metal-metal electrode pair.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 5-2","pages":"055503"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327421","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

Phononic perspective of anisotropic friction: Universal laws from the frictional phonon spectrum. 各向异性摩擦的声子观点：来自摩擦声子谱的普遍规律。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-05-01 DOI: 10.1103/PhysRevE.111.055506

Yi Tao, Chengdong Sun, Shuyu Huang, Yun Dong, Yajing Kan, Zhiyong Wei, Yan Zhang, Zhonghua Ni, Yunfei Chen

{"title":"Phononic perspective of anisotropic friction: Universal laws from the frictional phonon spectrum.","authors":"Yi Tao, Chengdong Sun, Shuyu Huang, Yun Dong, Yajing Kan, Zhiyong Wei, Yan Zhang, Zhonghua Ni, Yunfei Chen","doi":"10.1103/PhysRevE.111.055506","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.055506","url":null,"abstract":"Friction, defined as the resistance to relative motion between two contacting objects, has historically been regarded as a consequence of mechanical energy dissipation. However, the precise mechanism by which it operates in the context of phonon excitation has not been fully elucidated. In this study, we present a theoretical framework based on the atomistic Green's function method that connects friction-excited phonons to the resulting friction force. Our analysis reveals that phonons are primarily excited at bi-washboard frequencies and their harmonics when relative motion occurs in arbitrary directions. The theoretical predictions are validated through detailed molecular dynamics simulations and further supported by experimental evidence. A key finding of our work is the identification of a spectral function that links the normalized number densities of friction-excited phonons to their frequencies. This relationship is intrinsic to the friction system and remains independent of specific factors such as sliding velocity or direction. Our discovery enables a quantitative explanation of anisotropic friction, nonmonotonic velocity dependence of friction, and fluctuations in friction, all without relying on additional assumptions. By resolving the spectral characteristics of phonon excitations, this study provides systematic insights into the fundamental nature of friction.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 5-2","pages":"055506"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327432","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