Physical Review E最新文献_第6页

Shell models on recurrent sequences: Fibonacci, Padovan, and other series.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.025103

L Manfredini, Ö D Gürcan

{"title":"Shell models on recurrent sequences: Fibonacci, Padovan, and other series.","authors":"L Manfredini, Ö D Gürcan","doi":"10.1103/PhysRevE.111.025103","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025103","url":null,"abstract":"A class of shell models is proposed where the shell variables are defined on a recurrent sequence of integer wave numbers such as the Fibonacci or the Padovan series or their variations, including a sequence made of square roots of Fibonacci numbers rounded to the nearest integer. Considering the simplest model, which involves only local interactions, the interaction coefficients can be generalized in such a way that the inviscid invariants, such as energy and helicity, can be conserved even though there is no exact self-similarity. It is shown that these models basically have identical features with standard shell models and produce the same power-law spectra, similar spectral fluxes, and analogous deviation from self-similar scaling of the structure functions, implying comparable levels of turbulent intermittency. Such a formulation potentially opens up the possibility of using shell models, or their generalizations along with discretized regular grids such as those found in direct numerical simulations, as either diagnostic tools or subgrid models. It also allows us to develop models where the wave-number shells can be interpreted as sparsely decimated sets of wave numbers over an initially regular grid. In addition to conventional shell models with local interactions that result in forward cascade, a particular a helical shell model with long-range interactions is considered on a similarly recurrent sequence of wave numbers, corresponding to the Fibonacci series, and found to result in the usual inverse cascade.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025103"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659405","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

Stark effect at high electric fields and Stark ion broadening widths and shifts for different microfield distributions at quasistatic approximation in atomic oxygen spectra.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.025209

S Werbowy, B Pranszke, L Windholz

{"title":"Stark effect at high electric fields and Stark ion broadening widths and shifts for different microfield distributions at quasistatic approximation in atomic oxygen spectra.","authors":"S Werbowy, B Pranszke, L Windholz","doi":"10.1103/PhysRevE.111.025209","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025209","url":null,"abstract":"Studies of the static Stark effect are reported for the multiplets at 615.8, 645.6, 777.6, 822.4, 844.9, and 926.5 nm (vacuum wavelengths) of atomic oxygen, which are important for various applications. From the Stark patterns recorded at very high electric fields up to 780 kV/cm, we have determined the differences of the scalar polarizabilities Δα_{0} and the tensor polarizabilities α_{2} for the investigated lines. For most of the lines we present the first-obtained experimental results. The Stark broadening of the studied lines by non-neutral plasmas in the ion density range of 10^{13}-10^{19}cm^{-3} was analyzed based on these results. The quasistatic approximation and three distinct microfield distributions were employed, which corresponded to different types of coupling in the plasma, namely the Holtzmark, Mayer, and irregular cluster distributions. Ion broadened widths and shifts were obtained from the simulated line shapes for different microfield distributions and ion densities. The analysis of these outcomes enabled us to determine their correlations with the independently determined Δα_{0} and microfield distribution, ultimately enabling us to ascertain the contour of the microfield distribution itself.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025209"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659418","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

Diffusion equation and rare fluctuations of the biased aging continuous-time random-walk model.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024138

Yuanze Hong, Tian Zhou, Wanli Wang

引用次数: 0

Strain-dependent evolution of avalanche dynamics in bulk metallic glass. 块状金属玻璃中雪崩动力学随应变的演变。

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.025410

Qi Huang, Kaiguo Chen, Chen Liu, Guisen Liu, Yang Shao, Chenlong Zhao, Ran Chen, Hengtong Bu, Lingti Kong, Yao Shen

{"title":"Strain-dependent evolution of avalanche dynamics in bulk metallic glass.","authors":"Qi Huang, Kaiguo Chen, Chen Liu, Guisen Liu, Yang Shao, Chenlong Zhao, Ran Chen, Hengtong Bu, Lingti Kong, Yao Shen","doi":"10.1103/PhysRevE.111.025410","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.025410","url":null,"abstract":"Avalanche phenomena characterized by power-law scaling are observed in amorphous solids and many other nonequilibrium systems during their deformation. Avalanches in these systems often exhibit scale invariance, a feature reminiscent of critical phenomena and universality classes, although their fundamental nature remains unclear. In this paper, we use in situ acoustic emission techniques to experimentally investigate the characteristics and evolution of avalanches during the deformation process of bulk metallic glass (BMG), a representative amorphous solid. We observed abundant avalanche events from the microplastic deformation region to the failure of the sample. We find that avalanches are power-law distributed with an exponent decreasing from 1.61 to 1.49 with increasing deformation throughout the tensile experiment. By quantitatively analyzing the strong strain dependence of various avalanche characteristics, we highlight the importance of additional coefficients that complete the widely studied finite size scaling description of avalanche dynamics and revealed a strain-mediated avalanche scaling mechanism. Through surface morphology analysis and spectral analysis of avalanche signals in BMG samples, we conclude that the underlying process of these avalanches are not macroscopic, such as cracks and large shear band propagation, but is instead related to nanoscale microstructural adjustments. Our results encourage further exploration into the microscopic origins of avalanches and suggest that theoretical frameworks beyond finite-size scaling merit more in-depth investigations.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-2","pages":"025410"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659444","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

Editorial: Physical Review E-A Uniquely Diverse Journal.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 Epub Date: 2025-02-11 DOI: 10.1103/PhysRevE.111.020001

Patrick Charbonneau, Dario Corradini

引用次数: 0

Universality classes of thermalization and energy diffusion.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024122

Wei Lin, Weicheng Fu, Zhen Wang, Yong Zhang, Hong Zhao

引用次数: 0

Multimotor cargo navigation in microtubule networks with various mesh sizes.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024413

Mason Grieb, Nimisha Krishnan, Jennifer L Ross

{"title":"Multimotor cargo navigation in microtubule networks with various mesh sizes.","authors":"Mason Grieb, Nimisha Krishnan, Jennifer L Ross","doi":"10.1103/PhysRevE.111.024413","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024413","url":null,"abstract":"The kinesin superfamily of motor proteins is a major driver of anterograde transport of vesicles and organelles within eukaryotic cells via microtubules. Numerous studies have elucidated the step size, velocities, forces, and navigation ability of kinesins both in reconstituted systems and in live cells. Outside of cells, the kinesin-based transport is physically regulated and can be controlled by obstacles or defects in the path or the interaction between several motors on the same cargo. To explore the physical control parameters on kinesin-driven transport, we created increasingly dense microtubule networks in vitro to test how kinesin cargoes made from quantum dots with one to 10 kinesin motors attached are able to navigate the network. We find that many motors on the quantum dot increase the distance walked by a factor of 2, association time increased by a factor of 4 to 5, and the average speed by a factor of 2. We quantified the tortuosity and the trajectory persistence length and found the persistence length increased by a factor of 5 to 8 when multiple motors are on the cargo. We also find that these transport parameters depend linearly on the mesh size of the dense network for cargoes with multiple motors. Thus, both motor number and network density are physical aspects that regulate where cargoes traverse in space and time.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024413"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659146","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

Diffusion reconstruction for the diluted Ising model.

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.L023301

Stefano Bae, Enzo Marinari, Federico Ricci-Tersenghi

引用次数: 0

Kinetics of zoospores approaching a root using a microfluidic device.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024411

C Cohen, F X Gauci, X Noblin, E Galiana, A Attard, P Thomen

{"title":"Kinetics of zoospores approaching a root using a microfluidic device.","authors":"C Cohen, F X Gauci, X Noblin, E Galiana, A Attard, P Thomen","doi":"10.1103/PhysRevE.111.024411","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.024411","url":null,"abstract":"Phytophthora species are plant pathogens that cause considerable damage to agrosystems and ecosystems, and have a major impact on the economy. Infection occurs when their biflagellate zoospores move and reach a root on which they aggregate. However, the communication between the plant and the zoospores and how this communication modifies the behavior of the swimming zoospores is not fully understood. Here we use a microfluidic device incorporating a growing Arabidopsis thaliana root to study the real-time kinetics of Phytophthora parasitica zoospores approaching the root and accumulating (or aggregating) around a specific area called the elongation zone. We show that zoospore kinetics are modified only below a distance of a few hundred microns from the aggregation center, with a decrease in velocity coupled to an increase in the number of turns taken. Furthermore, we show that the rate of aggregation is constant throughout a one-hour experiment, and is dependent on zoospore density. This rate is consistent with the fact that zoospores randomly encounter the region close to the elongation zone, a result compatible with an absence of attraction beyond a few hundred microns. Finally, we show that in our configuration, this absence of attraction can be explained by a residual flow responsible for limiting the diffusion of the signal supposedly emitted by the root to a boundary layer of a few hundred microns.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"111 2-1","pages":"024411"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659212","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

Learning thresholds lead to stable language coexistence.

IF 2.2 3区物理与天体物理

Physical Review E Pub Date : 2025-02-01 DOI: 10.1103/PhysRevE.111.024304

M V Tamm, E Heinsalu, S Scialla, M Patriarca

引用次数: 0