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Promotion of cooperation by payoff-based view radii in different interaction modes 在不同互动模式下，通过基于回报的视角半径促进合作
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-07-14 DOI: 10.1209/0295-5075/ad5972
Shun Gao, Wenchen Han, Haihong Li, Qionglin Dai and Junzhong Yang
{"title":"Promotion of cooperation by payoff-based view radii in different interaction modes","authors":"Shun Gao, Wenchen Han, Haihong Li, Qionglin Dai and Junzhong Yang","doi":"10.1209/0295-5075/ad5972","DOIUrl":"https://doi.org/10.1209/0295-5075/ad5972","url":null,"abstract":"In this letter, we introduce the payoff-based view radii into evolutionary prisoner's dilemma games performed in a two-dimensional plane and study how the adaptive view radii affect cooperation. Two types of feedback are considered, positive feedback and negative one. In the case of positive feedback, high-payoff (low-payoff) agents have large (small) view radii. In the case of negative feedback, the things are opposite. Meanwhile, three different interaction modes are considered, one-way visual interaction, proactive visual interaction, and two-way visual interaction. Our results show that the payoff-based view radii could promote cooperation effectively in all cases. Especially, there exist optimal behaviors of cooperation for both positive feedback and negative feedback. When agents are allowed to move, we find that the cooperation level could be further improved by slow migration. Our results shed light on the promotion of cooperation by the adaptive view radii and suggest different ways to adjust view radii to achieve high cooperation levels in different interaction modes.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"36 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141719685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Correlation between the structural phase transition and magnetic properties of sol-gel synthesized nanoparticles 溶胶凝胶合成纳米粒子的结构相变与磁性之间的相关性
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-07-10 DOI: 10.1209/0295-5075/ad5908
Swati Jharwal, Vivek Kumar Verma and Arvind Kumar
{"title":"Correlation between the structural phase transition and magnetic properties of sol-gel synthesized nanoparticles","authors":"Swati Jharwal, Vivek Kumar Verma and Arvind Kumar","doi":"10.1209/0295-5075/ad5908","DOIUrl":"https://doi.org/10.1209/0295-5075/ad5908","url":null,"abstract":"The La2CoFeO6 (LCFO) nanoparticles were synthesized using the sol-gel method and calcined at 600 , 800 , and 1000 . The X-ray diffraction data confirm the successful formation of LCFO nanoparticles. The crystallite size was observed to increase from ∼13 nm to ∼26 nm as the calcination temperature rose. Detailed Rietveld analysis revealed the coexistence of both orthorhombic (Pnma: S.G. 62) and rhombohedral ( : S.G. 167) phases in the LCFO samples. A two-phase Rietveld refinement demonstrated a structural phase transition (from Pnma to ) as the calcination temperature increased. FESEM micrographs exhibited a granular morphology for the LCFO nanoparticles, and the grain size was observed to increase with the elevated calcination temperature. Magnetization curves illustrated an increase in magnetization with a decrease in crystallite size or a reduction in calcination temperature for LCFO nanoparticles. At higher calcination temperatures, the rhombohedral phase displayed significant antisite disorder, resulting in the disruption of long-range ferromagnetic ordering in the material and a subsequent decrease in maximum magnetization.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"40 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141611910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Calculation of the ratio of branching fractions 计算分支比例
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-07-08 DOI: 10.1209/0295-5075/ad5909
Elnaz Amirkhanlou and Behnam Mohammadi
{"title":"Calculation of the ratio of branching fractions","authors":"Elnaz Amirkhanlou and Behnam Mohammadi","doi":"10.1209/0295-5075/ad5909","DOIUrl":"https://doi.org/10.1209/0295-5075/ad5909","url":null,"abstract":"The LHCb Collaboration has reported for the first time the branching fraction for the decay as . They measured the branching fraction of this decay relative to that of the normalization channel as . In this work, we have studied the and decays in three scales of μ and strong coupling values mesons using a simple model based on the framework of the factorization approach presented. We have obtained for decay at and for decay at . We have also estimated at which is consistent with the experimental result.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"24 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Modified gravity theories from the Barrow hypothesis 巴罗假说的修正引力理论
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-07-08 DOI: 10.1209/0295-5075/ad4c02
Ankit Anand and Ruben Campos Delgado
{"title":"Modified gravity theories from the Barrow hypothesis","authors":"Ankit Anand and Ruben Campos Delgado","doi":"10.1209/0295-5075/ad4c02","DOIUrl":"https://doi.org/10.1209/0295-5075/ad4c02","url":null,"abstract":"Barrow proposed that quantum gravity effects might introduce fractal corrections to the area of the event horizon of black holes. The area law gets modified as , with . It was so far unclear whether this assumption could lead to meaningful quantum gravity theories beyond general relativity. In this paper, we argue that this is indeed the case. In particular, assuming Δ to be a radial function, we show that the Barrow hypothesis, together with Jacobson's approach can generate non-trivial modified gravity theories.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"22 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Analysing the intrinsic multifractal nature of seismic sequences distributed along the Pacific Ring of Fire 分析沿太平洋火环分布的地震序列的内在多分形性质
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-07-08 DOI: 10.1209/0295-5075/ad5101
D. B. de Freitas and G. S. França
{"title":"Analysing the intrinsic multifractal nature of seismic sequences distributed along the Pacific Ring of Fire","authors":"D. B. de Freitas and G. S. França","doi":"10.1209/0295-5075/ad5101","DOIUrl":"https://doi.org/10.1209/0295-5075/ad5101","url":null,"abstract":"A multifractal methodology was utilized to analyze a set of seismic sequences distributed along the Pacific Ring of Fire, sourced from the National Earthquake Information Center (NEIC) catalog. The analysis employed the Multifractal Detrended Moving Average (MFDMA) analysis method to characterize the presence of intrinsic multifractality using different multifractal indicators. The findings of this study can be summarized as follows: our statistical tests confidently assert that only the Kuriles, Peru, and Solomon Islands zones demonstrate an absence of intrinsic multifractality; tests were also applied using the exponent , but they were inconclusive. We believe these results contribute to an enhanced understanding of the multifractal characteristics of seismic activity and their implications for earthquake dynamics.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"20 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 steering in a star network 星形网络中的量子转向
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-07-07 DOI: 10.1209/0295-5075/ad4fbc
Guangming Jiang, Xiaohua Wu and Tao Zhou
{"title":"Quantum steering in a star network","authors":"Guangming Jiang, Xiaohua Wu and Tao Zhou","doi":"10.1209/0295-5075/ad4fbc","DOIUrl":"https://doi.org/10.1209/0295-5075/ad4fbc","url":null,"abstract":"In this work, we will consider the star network scenario where the central party is trusted while all the edge parties (with a number of n) are untrusted. Network steering is defined with an n local hidden state model which can be viewed as a special kind of n local hidden variable model. Two different types of sufficient criteria, nonlinear steering inequality and linear steering inequality will be constructed to verify the quantum steering in a star network. Based on the linear steering inequality, how to detect the network steering with a fixed measurement will be discussed.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"46 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Maximisation of synchronisability under low injection power 低喷射功率下的同步性最大化
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-07-01 DOI: 10.1209/0295-5075/ad4414
Hisa-Aki Tanaka, Yoji Yabe, Somei Suga, Akira Keida, Kai Maeda, Fumito Mori and Hiroo Sekiya
{"title":"Maximisation of synchronisability under low injection power","authors":"Hisa-Aki Tanaka, Yoji Yabe, Somei Suga, Akira Keida, Kai Maeda, Fumito Mori and Hiroo Sekiya","doi":"10.1209/0295-5075/ad4414","DOIUrl":"https://doi.org/10.1209/0295-5075/ad4414","url":null,"abstract":"Synchronisability of limit cycle oscillators has been measured by the width of the synchronous frequency band, known as the Arnold tongue, concerning external forcing. We clarify a fundamental limit on maximizing this synchronisability within a specified extra low power budget, which underlies an important and ubiquitous problem in nonlinear science related to an efficient synchronisation of weakly forced nonlinear oscillators. In this letter, injection-locked Class-E oscillators are considered as a practical case study, and we systematically analyse their power consumption; our observations demonstrate the independence of power consumption in the oscillator from power consumption in the injection circuit and verify the dependency of power consumption in the oscillator solely on its oscillation frequency. These systematic observations, followed by the mathematical optimisation establish the existence of a fundamental limit on synchronisability, validated through systematic circuit simulations. The results offer insights into the energetics of synchronisation for a specific class of injection-locked oscillators.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"31 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Bias-induced circular current in a loop nanojunction with AAH modulation: Role of hopping dimerization 带有 AAH 调制的环形纳米结中的偏置诱导环形电流：跳跃二聚化的作用
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-06-24 DOI: 10.1209/0295-5075/ad4585
Moumita Mondal and Santanu K. Maiti
{"title":"Bias-induced circular current in a loop nanojunction with AAH modulation: Role of hopping dimerization","authors":"Moumita Mondal and Santanu K. Maiti","doi":"10.1209/0295-5075/ad4585","DOIUrl":"https://doi.org/10.1209/0295-5075/ad4585","url":null,"abstract":"In this work, we investigate the interplay between correlated disorder and hopping dimerization on bias-driven circular current in a loop conductor that is clamped between two electrodes. The correlated disorder is introduced in site energies of the ring in the form of Aubry-André-Harper (AAH) model. Simulating the quantum system within a tight-binding framework all the results are worked out based on the waveguide theory. Unlike transport current, circular current in the loop conductor can get enhanced with increasing disorder strength. This enhancement becomes much effective when hopping dimerization is included which is taken following the Su-Schrieffer-Heeger (SSH) model. The characteristic features of bias-driven circular current are studied under different input conditions and we find that the results are robust for a wide range of physical parameters. For the sake of completeness, uncorrelated disorder is also considered. Our analysis may provide a new insight in analyzing transport behavior in different disordered lattices in the presence of additional restrictions in hopping integrals.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"64 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Relativistic conic motion as a second-class dynamical system 作为二等动力系统的相对论圆锥运动
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-06-20 DOI: 10.1209/0295-5075/ad49d1
S. L. Oliveira, C. M. B. Santos and R. Thibes
{"title":"Relativistic conic motion as a second-class dynamical system","authors":"S. L. Oliveira, C. M. B. Santos and R. Thibes","doi":"10.1209/0295-5075/ad49d1","DOIUrl":"https://doi.org/10.1209/0295-5075/ad49d1","url":null,"abstract":"We investigate relativistic motion along a general conic path under the influence of an open potential as a Dirac-Bergmann constrained dynamical model. The system turns out to exhibit a set of four second-class constraints in phase space which we fully explore obtaining a relativistic Poisson algebra generalizing previously known algebraic structures. With a convenient integration factor, the Euler-Lagrange differential equations can be worked out to its general solution in closed form. We perform the canonical quantization in terms of the corresponding Dirac brackets, applying the Dirac-Bergmann algorithm. The complete Dirac brackets algebra in phase space as well as its physical realization in terms of differential operators are explicitly obtained.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"78 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Evolutionary dynamics of memory-one extortion and generosity on scale-free simplices 无标度简约上内存一敲诈和慷慨的进化动力学
IF 1.8 4区 物理与天体物理
EPL Pub Date : 2024-06-20 DOI: 10.1209/0295-5075/ad49d3
Lei Zhu, Yuying Zhu and Chengyi Xia
{"title":"Evolutionary dynamics of memory-one extortion and generosity on scale-free simplices","authors":"Lei Zhu, Yuying Zhu and Chengyi Xia","doi":"10.1209/0295-5075/ad49d3","DOIUrl":"https://doi.org/10.1209/0295-5075/ad49d3","url":null,"abstract":"Both extortionate and generous strategies within the framework of zero-determinant (ZD) strategy can be linearly related to the opponent's payoffs. Here we explore their evolutionary performances for both iterated two-player and multi-player games. We mainly investigate two scenarios on simplicial complexes: one is the evolutionary scenario with cooperation (C), defection (D) and extortion (E), the other is the cooperation, defection and generosity (G). We find that both extortion and generosity can help cooperators resist the invasion of defectors. Intriguingly, the extortioner, who always enforces higher payoff than co-players, is more beneficial to promote cooperation than generosity. Compared with kindness and indulgence, being strict with the co-players can actually maintain cooperative behaviors in the long run. Simulations on the simplicial complexes revel that the catalytic effect of extortion on the evolution of cooperation even be more obvious in iterated multi-player social dilemmas than the two-player case, hence cooperation becomes more popular when the networks include more 2-simplex interactions. Our results can help to illustrate the role of higher-order interaction in the evolution of altruistic behaviors.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"9 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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