Physical review. E最新文献_第5页

Entropically driven phase separation and effective multibody interactions in block copolymers. 嵌段共聚物中熵驱动相分离和有效多体相互作用。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054502

Xinyue Zhang, Mingge Zhao, Junhan Cho

引用次数: 0

Current fluctuations in the symmetric zero-range process below and at critical density. 在对称零范围过程中的电流波动低于临界密度。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.L052103

Tanmoy Chakraborty, Punyabrata Pradhan, Kavita Jain

{"title":"Current fluctuations in the symmetric zero-range process below and at critical density.","authors":"Tanmoy Chakraborty, Punyabrata Pradhan, Kavita Jain","doi":"10.1103/PhysRevE.110.L052103","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.L052103","url":null,"abstract":"Characterizing current fluctuations in a steady state is of fundamental interest and has attracted considerable attention in the recent past. However, the bulk of the studies are limited to systems that either do not exhibit a phase transition or are far from criticality. Here we consider a symmetric zero-range process on a ring that is known to show a phase transition in the steady state. We analytically calculate two density-dependent transport coefficients, namely, the bulk-diffusion coefficient and the particle mobility, that characterize the first two cumulants of the time-integrated current. We show that on the hydrodynamic scale, away from the critical point, the variance of the time-integrated current in the steady state grows with time t as sqrt[t] and t at short and long times, respectively. Moreover, we find an expression of the full scaling function for the variance of the time-integrated current and thereby the amplitude of the temporal growth of the current fluctuations. At the critical point, using a scaling theory, we find that, while the above-mentioned long-time scaling of the variance of the cumulative current continues to hold, the short-time behavior is anomalous in that the growth exponent is larger than one-half and varies continuously with the model parameters.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5","pages":"L052103"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847209","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

Intermediate scattering function of a gravitactic circle swimmer. 重力圆游泳者的中间散射函数。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054606

Regina Rusch, Oleksandr Chepizhko, Thomas Franosch

{"title":"Intermediate scattering function of a gravitactic circle swimmer.","authors":"Regina Rusch, Oleksandr Chepizhko, Thomas Franosch","doi":"10.1103/PhysRevE.110.054606","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054606","url":null,"abstract":"We analyze gravitaxis of a Brownian circle swimmer by deriving and analytically characterizing the experimentally measurable intermediate scattering function (ISF). To solve the associated Fokker-Planck equation, we use a spectral-theory approach, finding formal expressions in terms of eigenfunctions and eigenvalues of the overdamped-noisy-driven pendulum problem. We further perform a Taylor series of the ISF in the wavevector to extract the cumulants up to the fourth order. We focus on the skewness and kurtosis analyzed for four observation directions in the 2D plane. Validating our findings involves conducting Langevin-dynamics simulations and interpreting the results using a harmonic approximation. The skewness and kurtosis are amplified as the orienting torque approaches the intrinsic angular drift of the circle swimmer from above, highlighting deviations from Gaussian behavior. Transforming the ISF to the comoving frame, a measurable quantity, reveals gravitactic effects and diverse behaviors spanning from diffusive motion at low wavenumbers to circular motion at intermediate wavenumbers and directed motion at higher wavenumbers.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054606"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847314","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

Cell theories for the chiral crystal phase of hard equilateral triangles. 硬等边三角形手性晶体相的细胞理论。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054701

Yuri Martínez-Ratón, Enrique Velasco

{"title":"Cell theories for the chiral crystal phase of hard equilateral triangles.","authors":"Yuri Martínez-Ratón, Enrique Velasco","doi":"10.1103/PhysRevE.110.054701","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054701","url":null,"abstract":"We derive several versions of the cell theory for a crystal phase of hard equilateral triangles. To that purpose we analytically calculated the free area of a frozen oriented or freely rotating particle inside the cavity formed by its neighbors in a chiral configuration of their orientations. From the most successful versions of the theory we predict an equation of state which, despite being derived from a crystal configuration of particles, describes very reasonably the equation of state of the 6-atic liquid-crystal phase at packing fractions not very close from the isotropic-6-atic bifurcation. Also, the same equation of state performs well when compared to that from MC simulations for the stable crystal phase. The agreement can even be improved by selecting adequate values for the angle of chirality. Despite the success of two versions of the theory, we show that the free energy is an increasing function of the angle of chirality, implying that the most stable phase is the achiral phase. Furthermore, we show that possible clustering effects, such as the formation of perfect chiral hexagonal clusters, which in turn crystallize into an hexagonal lattice, cannot explain the presence of the chirality observed in simulations.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054701"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847322","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

Chimera states in pulse-coupled oscillator systems. 脉冲耦合振荡器系统中的奇美拉态。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054214

Arke Vogell, Udo Schilcher, Jorge F Schmidt, Christian Bettstetter

引用次数: 0

Rigorous hydrodynamics from linear Boltzmann equations and viscosity-capillarity balance. 从线性玻尔兹曼方程和粘度-气相平衡出发的严格流体力学。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.055105

Florian Kogelbauer, Ilya Karlin

引用次数: 0

Noise-induced peak intensity fluctuations in class B laser systems. B类激光系统中噪声引起的峰值强度波动。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054120

Jason Hindes, Ira B Schwartz

引用次数: 0

Signatures of self-organized dynamics in rapidly driven critical sandpiles. 快速驱动临界砂堆自组织动力学特征。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054203

Bosiljka Tadić, Alexander Shapoval, Mikhail Shnirman

{"title":"Signatures of self-organized dynamics in rapidly driven critical sandpiles.","authors":"Bosiljka Tadić, Alexander Shapoval, Mikhail Shnirman","doi":"10.1103/PhysRevE.110.054203","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054203","url":null,"abstract":"We study two prototypical models of self-organized criticality, namely sandpile automata with deterministic (Bak-Tang-Wiesenfeld) and probabilistic (Manna model) dynamical rules, focusing on the nature of stress fluctuations induced by driving-adding grains during avalanche propagation, and dissipation through avalanches that hit the system boundary. Our analysis of stress evolution time series reveals robust cyclical trends modulated by collective fluctuations with dissipative avalanches. These modulated cycles attain higher harmonics, characterized by multifractal measures within a broad range of timescales. The features of the associated singularity spectra capture the differences in the dynamic rules behind the self-organized critical states at adiabatic driving and their pertinent response to the increased driving rate, which alters the process of stochasticity and causes a loss of avalanche scaling. In sequences of outflow current carried by dissipative avalanches, the first return distributions follow the q-Gaussian law in the adiabatic limit. They appear to follow different laws at an intermediate scale with an increased driving rate, describing different pathways to the gradual loss of cooperative behavior in these two models. The robust appearance of cyclical trends and their multifractal modulation thus represents another remarkable feature of self-organized dynamics beyond the scaling of avalanches. It can also help identify the prominence of self-organizational phenomenology in an empirical time series when underlying interactions and driving modes remain hidden.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054203"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847569","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

Computational microscopy beyond perfect lenses. 超越完美透镜的计算显微镜。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054407

Xingyuan Lu, Minh Pham, Elisa Negrini, Damek Davis, Stanley J Osher, Jianwei Miao

引用次数: 0

Heat production in a stochastic system with nonlinear time-delayed feedback. 具有非线性延时反馈的随机系统中的热量产生。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054126

Robin A Kopp, Sabine H L Klapp

{"title":"Heat production in a stochastic system with nonlinear time-delayed feedback.","authors":"Robin A Kopp, Sabine H L Klapp","doi":"10.1103/PhysRevE.110.054126","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054126","url":null,"abstract":"Using the framework of stochastic thermodynamics we study heat production related to the stochastic motion of a particle driven by repulsive, nonlinear, time-delayed feedback. Recently it has been shown that this type of feedback can lead to persistent motion above a threshold in parameter space [R. A. Kopp et al., Phys. Rev. E 107, 024611 (2023)2470-004510.1103/PhysRevE.107.024611]. Here we investigate, numerically and by analytical methods, the rate of heat production in the different regimes around the threshold to persistent motion. We find a nonzero average heat production rate, 〈q[over ̇]〉, already below the threshold, indicating the nonequilibrium character of the system even at small feedback. In this regime, we compare to analytical results for a corresponding linearized delayed system and a small-delay approximation which provides a reasonable description of 〈q[over ̇]〉 at small repulsion (or delay time). Beyond the threshold, the rate of heat production is much larger and shows a maximum as a function of the delay time. In this regime, 〈q[over ̇]〉 can be approximated by that of a system subject to a constant force stemming from the long-time velocity in the deterministic limit. The distribution of dissipated heat, however, is non-Gaussian, contrary to the constant-force case.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054126"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847353","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