Physica A: Statistical Mechanics and its Applications最新文献_第3页

Dynamic immunization for disinformation spreading on signed social networks

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130321

Ai-Wen Li , Ya-Fang Liu , Jian-Lin Zhou , An Zeng , Xiao-Ke Xu , Ying Fan

{"title":"Dynamic immunization for disinformation spreading on signed social networks","authors":"Ai-Wen Li , Ya-Fang Liu , Jian-Lin Zhou , An Zeng , Xiao-Ke Xu , Ying Fan","doi":"10.1016/j.physa.2024.130321","DOIUrl":"10.1016/j.physa.2024.130321","url":null,"abstract":"<div><div>Signed social networks are a special type of social network with positive and negative relationships. It can provide a powerful framework for studying information spreading in light of opposite user relationships. Currently, static immunization strategies have been constructed to control the spread of disinformation on signed social networks. Here, we focus on dynamic immunization that can be real-time immune to the spread of disinformation on signed social networks, which is vital for shaping public discourse and opinion formation. Accordingly, we proposed the signed contact-tracing (SCT) considering the opposite attitudes of users toward information. Experiments with synthetic and empirical signed networks explore the impact of signed network structure with positive and negative edges on dynamic immunity and confirm the necessity of considering signs in the dynamic immune process. Then, the effectiveness of SCT was verified by two evaluation indicators, and find that targeting individuals with the same ideological group has a smaller spreading range and lower spreading speed than those without differentiated attitudes. Furthermore, the signed backward-contact-tracing (SBCT) based on SCT optimization offers optimal regulatory recommendations for enhancing immunity against disinformation in signed social networks. The study demonstrates how negative relationships impact the dynamic immunity of disinformation, and improves the application of dynamic immunity strategies in signed networks.</div></div>","PeriodicalId":20152,"journal":{"name":"Physica A: Statistical Mechanics and its Applications","volume":"659 ","pages":"Article 130321"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161292","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

Dynamic price interactions in energy commodities benchmarks: Insights from multifractal analysis during crisis periods

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130314

C.M.C. Inacio Jr , Ladislav Kristoufek , S.A. David

{"title":"Dynamic price interactions in energy commodities benchmarks: Insights from multifractal analysis during crisis periods","authors":"C.M.C. Inacio Jr , Ladislav Kristoufek , S.A. David","doi":"10.1016/j.physa.2024.130314","DOIUrl":"10.1016/j.physa.2024.130314","url":null,"abstract":"<div><div>This paper investigates the dynamic interrelationships between West Texas Intermediate (WTI) prices and various energy commodities including Brent crude oil futures, Brent spot prices, American diesel futures, and the Reformulated Blendstock for Oxygenate Blending, across four critical periods surrounding the Covid-19 pandemic and the Russia–Ukraine conflict. Employing the Multifractal Detrended Fluctuation Cross-Correlation Analysis (MFXDFA) methodology, the study analyzes both the static and dynamic Hurst exponents to examine the multifractal behaviors of these price relationships. Results indicate a pronounced increase in price persistence during the height of the Covid-19 pandemic, with a subsequent decrease during the Russia–Ukraine conflict, suggesting a shift toward a new price dynamic influenced by recent global crises. This research contributes to understanding the evolving dynamics in crude oil and refined products markets, shedding light on how major geopolitical and global health events can reshape market behavior and pricing structures in significant ways.</div></div>","PeriodicalId":20152,"journal":{"name":"Physica A: Statistical Mechanics and its Applications","volume":"659 ","pages":"Article 130314"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160681","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

Quantum information measures in quartic and symmetric potentials using perturbative approach

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130346

Vikash Kumar Ojha , Ramkumar Radhakrishnan , Mariyah Ughradar

{"title":"Quantum information measures in quartic and symmetric potentials using perturbative approach","authors":"Vikash Kumar Ojha , Ramkumar Radhakrishnan , Mariyah Ughradar","doi":"10.1016/j.physa.2024.130346","DOIUrl":"10.1016/j.physa.2024.130346","url":null,"abstract":"<div><div>We analyze the Shannon and Fisher information measures for systems subjected to quartic and symmetric potential wells. The wave functions are obtained by solving the time-independent Schrödinger equation, using aspects of perturbation theory. We examine how the information for various quantum states evolves with changes in the width of the potential well. For both potentials, the Shannon entropy decreases in position space and increases in momentum space as the width increases, maintaining a constant sum of entropies, consistent with Heisenberg’s uncertainty principle. The Fisher information measure shows different behaviors for the two potentials: it remains nearly constant for the quartic potential. For the symmetric well potential, the Fisher information decreases in position space and increases in momentum space as localization in position space increases, also consistent with the analogue of Heisenberg’s uncertainty principle. Additionally, the Bialynicki–Birula–Mycielski inequality is evaluated across various cases and is confirmed to hold in each instance.</div></div>","PeriodicalId":20152,"journal":{"name":"Physica A: Statistical Mechanics and its Applications","volume":"659 ","pages":"Article 130346"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161216","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

Social media discussions anticipates financial market volumes

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2025.130388

Giulio Vicentini , Alessandro Nucci , Guido Caldarelli , Elisa Omodei

引用次数: 0

Modeling and simulation of the fish collective behavior with risk perception and startle cascades

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130337

Zhijie Zhao , Qichen Shi , Yong Liu

{"title":"Modeling and simulation of the fish collective behavior with risk perception and startle cascades","authors":"Zhijie Zhao , Qichen Shi , Yong Liu","doi":"10.1016/j.physa.2024.130337","DOIUrl":"10.1016/j.physa.2024.130337","url":null,"abstract":"<div><div>In this paper, an improved model of fish collective behavior is proposed, which combines social interactions with the risk perception and startle cascades behavior. By modeling the fast-start of fish individual and the startle propagation processes in fish school, the sudden collective evasion phenomenon during the fish collective behavior is studied. Utilizing this model, the paper focuses on investigating the impacts of cluster patterns and individual heterogeneity in social behavior and risk perception on the collective evasion process through simulations. The results show that the density of cluster aggregation is crucial in determining the propagation capability of startle responses. Conversely, the sudden startle propagation may completely change the type of cluster pattern for the cases in transitional zones. In some scenarios, a very small number of behaviorally heterogeneous individuals can dominate the cluster pattern of the entire group. Finally, it is found that distributing individuals with strong perception abilities around the periphery of the group while clustering those with weaker perception abilities within the inner group enhances the overall perception ability of the entire group.</div></div>","PeriodicalId":20152,"journal":{"name":"Physica A: Statistical Mechanics and its Applications","volume":"659 ","pages":"Article 130337"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160749","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

Anchoring transitions in a liquid crystal film near the interacting wall: A mean-force potentials approach

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130320

Izabela S̀liwa , Pavel V. Maslennikov , Alex V. Zakharov

引用次数: 0

Kagome antiferromagnet with the multisite interaction in the external magnetic field: Exact results within higher recursive-lattice approximation

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130326

E. Jurčišinová, M. Jurčišin

{"title":"Kagome antiferromagnet with the multisite interaction in the external magnetic field: Exact results within higher recursive-lattice approximation","authors":"E. Jurčišinová, M. Jurčišin","doi":"10.1016/j.physa.2024.130326","DOIUrl":"10.1016/j.physa.2024.130326","url":null,"abstract":"<div><div>The so-called 3-star kagome-like recursive-lattice approximation is introduced that significantly more accurately approximates the basic geometric structure of the real two-dimensional kagome lattice. The exact solution of the antiferromagnetic Ising model in the external magnetic field and with the presence of the three-site interaction within each elementary triangle of the introduced recursive lattice is found. The free energy of the model is derived and the system of all ground states is determined. The exact expressions for the residual entropies and magnetization values of all ground states of the model are derived. The magnetic and thermodynamic properties of the model are discussed in detail and are compared to those obtained in the framework of the lower recursive-lattice approximations of the model as well as to the existing exact results on the real kagome lattice. The performed analysis, on the one hand, confirms the validity of two early stated hypotheses about the behavior of residual entropies and magnetization properties of all ground states of frustrated magnetic systems on the recursive lattices and, on the other hand, allows one to make also nontrivial conclusions about the fundamental properties of the model on the real kagome lattice although the corresponding exact solutions are still not available. Last but not least, the performed analysis once again confirms the effectiveness of the recursive-lattice technique for the analysis of frustrated magnetic systems.</div></div>","PeriodicalId":20152,"journal":{"name":"Physica A: Statistical Mechanics and its Applications","volume":"659 ","pages":"Article 130326"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161212","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

Source identification on financial networks with label propagation

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130328

Zhao-Long Hu , Qichao Jin , Lei Sun , Shuilin Peng

{"title":"Source identification on financial networks with label propagation","authors":"Zhao-Long Hu , Qichao Jin , Lei Sun , Shuilin Peng","doi":"10.1016/j.physa.2024.130328","DOIUrl":"10.1016/j.physa.2024.130328","url":null,"abstract":"<div><div>Borrowing and lending between banks and firms is the main channel of financial risk propagation, and there have been a number of studies on risk propagation and identification from the financial perspective. Despite complex networks are used as an important analytical tool for risk propagation in the financial system, there are few studies on analyzing financial risk source identification from the perspective of complex networks. With the help of complex network theory, we establish a multi-layer dynamic network between banks and firms, and propose an improved label propagation method for source identification based on the node degree, and this method can be applied to source identification under conditions of incomplete observation. A series of simulation experiments show that the proposed method exhibits a significant advantage in identifying the propagation source of financial risk compared with the original label propagation method. A key conclusion is that when targeting nodes with the highest out-degree, highest in-degree, highest total assets, or highest lent assets, our method encounters significant difficulties in identifying the propagation sources. Conversely, employing an opposite strategy allows us to accurately pinpoint these sources. Moreover, we find that the accuracy of source identification is mainly affected by the proportion of unobserved nodes, while the number of sources and the average connectivity of the network have relatively little effect. This study provides a new perspective for the study of risk propagation identification in financial network systems.</div></div>","PeriodicalId":20152,"journal":{"name":"Physica A: Statistical Mechanics and its Applications","volume":"659 ","pages":"Article 130328"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161253","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

Dynamical swirl structures powered by microswimmers in active nematics

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130338

Partha Sarathi Mondal , Pawan Kumar Mishra , Tamás Vicsek , Shradha Mishra

{"title":"Dynamical swirl structures powered by microswimmers in active nematics","authors":"Partha Sarathi Mondal , Pawan Kumar Mishra , Tamás Vicsek , Shradha Mishra","doi":"10.1016/j.physa.2024.130338","DOIUrl":"10.1016/j.physa.2024.130338","url":null,"abstract":"<div><div>Active nematics, in their pure form, have demonstrated a plethora of dynamic and steady-state behaviors, including large-scale dynamic structures, collective flows, and intricate multi-spatial temporal dynamics. This complexity further increases in the presence of external polar agents. We investigate active nematics interspersed with polar microswimmers, akin to active apolar cells infused with active impurities (microswimmers). Our comprehensive numerical study reveals that varying the microswimmers’ motility induces a novel spatiotemporal state in the active nematics backdrop. This state is marked by macroscopic swirl-like structures and a reduction in the overall order of the active nematics. Interestingly, this state emerges at intermediate motility levels, where microswimmers form local clusters and exhibit coherent motion. However, at higher motility levels, the swirls become less coherent, and microswimmer clustering intensifies. We show that the effect of the polar microswimmers on active nematics can be interpreted as a spatiotemporally correlated colored noise on active nematics, which promotes bend instability in active nematics, leading to the observed swirling dynamics. Our findings indicate that the spatiotemporal states are highly sensitive to the microswimmers’ motility, offering potential avenues for pathogen identification based on known motility characteristics.</div></div>","PeriodicalId":20152,"journal":{"name":"Physica A: Statistical Mechanics and its Applications","volume":"659 ","pages":"Article 130338"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161293","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

The trade-off between growth and risk in Kelly’s gambling and beyond

IF 2.8 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-02-01 DOI: 10.1016/j.physa.2024.130316

S. Cavallero , A. Rousselot , R. Pugatch , L. Dinis , D. Lacoste

引用次数: 0