Physical Review E最新文献_第2页

Direct measurement of topological barriers governing structural transitions in small colloidal clusters. 直接测量控制小胶体团簇结构转变的拓扑障碍。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/6k1d-d16p

Pritam K Mohanty, Noman Hanif Barbhuiya, B Prasanna Venkatesh, Miranda Holmes-Cerfon, Chandan K Mishra

引用次数: 0

Numerical methods for quasi-stationary distributions. 准平稳分布的数值方法。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/8qrl-jnzc

Sara Oliver-Bonafoux, Javier Aguilar, Tobias Galla, Raúl Toral

{"title":"Numerical methods for quasi-stationary distributions.","authors":"Sara Oliver-Bonafoux, Javier Aguilar, Tobias Galla, Raúl Toral","doi":"10.1103/8qrl-jnzc","DOIUrl":"https://doi.org/10.1103/8qrl-jnzc","url":null,"abstract":"In stochastic processes with absorbing states, the quasi-stationary distribution provides valuable insights into the long-term behavior prior to absorption. In this work, we revisit two well-established numerical methods for its computation. The first is an iterative algorithm for solving the nonlinear equation that defines the quasi-stationary distribution. We generalize this technique to accommodate general Markov stochastic processes, either with discrete or continuous state space, and with multiple absorbing states. The second is a Monte Carlo method with resetting, for which we propose a single-trajectory approach that uses the trajectory's own history to perform resets after absorption. In addition to these methodological contributions, we provide a detailed analysis of implementation aspects for both methods. We also compare their accuracy and efficiency across a range of examples. The results indicate that the iterative algorithm is generally the preferred choice for problems with simple boundaries, while the Monte Carlo approach is more suitable for problems with complex boundaries, where the implementation of the iterative algorithm is a challenging task.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"113 3-1","pages":"034316"},"PeriodicalIF":2.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147718680","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

Evolving fractal dimensions in iterative bicolored percolation. 迭代双色渗流中分形维数的演化。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/s2ql-zxz6

Shuo Wei, Haoyu Liu, Xin Sun, Youjin Deng, Ming Li

引用次数: 0

Information propagation in predator-prey dynamics of turbulent plasma. 湍流等离子体捕食-猎物动力学中的信息传播。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/p31r-2y55

Tomohiro Tanogami, Makoto Sasaki, Tatsuya Kobayashi

引用次数: 0

Coalescence of two critical points and accelerated phase dynamics in orientational ternary mixtures. 取向三元混合物中两个临界点的聚并及加速相动力学。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/85kk-h8ln

Hiroshi Yokota

引用次数: 0

Transition from traveling fronts to diffusion-limited growth in expanding populations. 在不断扩大的人口中，从流动前沿到扩散限制增长的转变。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/p3tt-gq73

Louis Brezin, Kyle J Shaffer, Kirill S Korolev

引用次数: 0

Phase transitions and plasma formation during the explosion of thin point cathodes in a high-current diode operating from vacuum to forevacuum. 在从真空到前真空工作的大电流二极管中，薄点阴极爆炸时的相变和等离子体形成。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/4y82-bgdy

E V Parkevich, K V Shpakov, A I Khirianova, K S Vinogradova, A A Tarasenko, D V Antonov

{"title":"Phase transitions and plasma formation during the explosion of thin point cathodes in a high-current diode operating from vacuum to forevacuum.","authors":"E V Parkevich, K V Shpakov, A I Khirianova, K S Vinogradova, A A Tarasenko, D V Antonov","doi":"10.1103/4y82-bgdy","DOIUrl":"https://doi.org/10.1103/4y82-bgdy","url":null,"abstract":"We investigate the processes of plasma formation and phase transitions occurring during the explosion of metal point emitters made from copper and tungsten wires approximately 1 mm in length and ∼10 µm in diameter. The experiments were performed under vacuum-to-forevacuum discharge conditions using nanosecond current pulses of up to ∼1 kA. It was found that an extended region of the copper emitter, with a length of ∼200-300 µm, remains intact for tens of nanoseconds and even after the discharge ends, while the emitter's base explodes completely, and its explosion products become stratified. A transition zone is observed between the base and end regions of the emitter, characterized by a smooth or sharp expansion of the degraded metal without stratification in the explosion products. During the copper emitter explosion, ejections of dense plasma with an electron concentration of at least 10^{20}cm^{-3} can occur. The expansion velocity of the exploded copper emitter material can reach (1-3)×10^{5} cm/s at residual air pressures of 10^{-4} to 10^{-1} Torr. An increase in air pressure to ∼1 Torr leads to a decrease in both the specific energy input and the expansion velocity of the explosion products. The explosion dynamics of copper and tungsten point emitters differ. In the structure of the tungsten emitter's explosion products, no striations are observed, and the length of the exploded region almost entirely coincides with the emitter's total length. Analysis of the point emitters' explosion dynamics and the discharge's electrophysical parameters indicates that the transition of the emitter to the explosion regime is based on two key stages: first, the achievement of the explosive electron emission mode over an extended part of the emitter's end region, followed by the development of a shunting breakdown through the expanding explosion products along the emitter surface.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"113 3-2","pages":"035203"},"PeriodicalIF":2.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147718904","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

Off-axis merging of leader channels in a high-voltage atmospheric discharge. 高压大气放电中导通道的离轴合并。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/g9b8-f4jf

Khristina T Smaznova, Pavel K Batrakov, Andrey A Rodionov, Alexander V Oginov

引用次数: 0

Controlling tissue size by active fracture. 通过主动骨折控制组织大小。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/dk15-hwzg

Wei Wang, Brian A Camley

{"title":"Controlling tissue size by active fracture.","authors":"Wei Wang, Brian A Camley","doi":"10.1103/dk15-hwzg","DOIUrl":"10.1103/dk15-hwzg","url":null,"abstract":"Groups of cells, including clusters of cancerous cells, multicellular organisms, and developing organs, may both grow and break apart. What physical factors control these fractures? In these processes, what sets the eventual size of clusters? We first develop a one-dimensional framework for understanding cell clusters that can fragment due to cell motility using an active particle model. We compute analytically how the break rate of cell-cell junctions depends on cell speed, cell persistence, and cell-cell junction properties. Next, we find the cluster size distributions, which differ depending on whether all cells can divide or only the cells on the edge of the cluster divide. Cluster size distributions depend solely on the ratio of the break rate to the growth rate-allowing us to predict how cluster size and variability depend on cell motility and cell-cell mechanics. Our results suggest that organisms can achieve better size control when cell division is restricted to the cluster boundaries or when fracture can be localized to the cluster center. Additionally, we derive a universal survival probability for an intact cluster S(t)=e^{-k_{d}t} at steady state if all cells can divide, which is independent of the rupture kinetics and depends solely on the cell division rate k_{d}. Finally, we further corroborate the one-dimensional analytics with two-dimensional simulations, finding quantitative agreement with some-but not all-elements of the theory across a wide range of cell motility. Our results link the general physics problem of a collective active escape over a barrier to size control, providing a quantitative measure of how motility can regulate organ or organism size.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"113 3-1","pages":"034405"},"PeriodicalIF":2.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13094707/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147718509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Q-learning-based community detection algorithm. 基于q学习的社区检测算法。

IF 2.4 3区物理与天体物理

Physical Review E Pub Date : 2026-03-01 DOI: 10.1103/kdcq-qfww

Xiaoyu Chen, Xingbao Gao

引用次数: 0