发布求助
文献互助 智能选刊 最新文献

Physical review. E最新文献

筛选
英文 中文
Buzz pollination: A theoretical analysis via scaling invariance. 蜂传粉：一个基于尺度不变性的理论分析。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054201
Daniel Borin, Vinicius Lourenço Garcia de Brito, Edson Denis Leonel, Matheus Hansen
{"title":"Buzz pollination: A theoretical analysis via scaling invariance.","authors":"Daniel Borin, Vinicius Lourenço Garcia de Brito, Edson Denis Leonel, Matheus Hansen","doi":"10.1103/PhysRevE.110.054201","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054201","url":null,"abstract":"<p><p>Nearly half of the bee species can perform a fascinating stereotyped behavior to collect pollen grains by vibrating flowers, known as buzz pollination. During the floral visit, these bees mechanically transfer the vibrations produced by their thoracic indirect flight muscles to the flower anther, inducing the movement of the pollen grains and leading them to be released through a small pore or slit placed at the tip of the anther in poricidal flowers. In such flowers, pollen release is affected by the vibrational behavior of buzzing bees, primarily their duration and velocity amplitude. However, we know little about how poricidal anther morphology may influence it. In this work, we investigated through a theoretical and numerical point of view the buzz pollination process considering a typical poricidal anther of a tomato flower (Solanum lycopersicum), which in our work will be approached by a rectangular billiard, experiencing vibrations applied by a bumblebee (Bombus terrestris). Our primary goals in this paper are (i) to understand the mechanism behind the pollen release in this model, (ii) to observe some scale effects associated with morphological variations of the anther (as pore size and anther shape), and (iii) analyze how these results are related to natural buzz pollination systems.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054201"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847318","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
Application of the shift-invert Lanczos algorithm to a nonequilibrium Green's function for transport problems. 平移逆Lanczos算法在运输问题非平衡格林函数中的应用。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.055302
K Uzawa, K Hagino
{"title":"Application of the shift-invert Lanczos algorithm to a nonequilibrium Green's function for transport problems.","authors":"K Uzawa, K Hagino","doi":"10.1103/PhysRevE.110.055302","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.055302","url":null,"abstract":"<p><p>Nonequilibrium Green's function theory and related methods are widely used to describe transport phenomena in many-body systems, but they often require a costly inversion of a large matrix. We show here that the shift-invert Lanczos method can dramatically reduce the computational effort. We apply the method to two test problems, namely a simple model Hamiltonian and to a more realistic Hamiltonian for nuclear fission. For a Hamiltonian of dimension 66 103 we find that the computation time is reduced by a factor of 33 compared to the direct calculation of the Green's function.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-2","pages":"055302"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847227","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
Quasiuniversal behavior of shear relaxation times in simple fluids. 简单流体中剪切松弛时间的准通用行为。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054101
S A Khrapak, A G Khrapak
{"title":"Quasiuniversal behavior of shear relaxation times in simple fluids.","authors":"S A Khrapak, A G Khrapak","doi":"10.1103/PhysRevE.110.054101","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054101","url":null,"abstract":"<p><p>We calculate the shear relaxation times in four important simple monatomic model fluids: Lennard-Jones, Yukawa, soft-sphere, and hard-sphere fluids. It is observed that in properly reduced units, the shear relaxation times exhibit quasiuniversal behavior when the density increases from the gaslike low values to the high-density regime near crystallization. They first decrease with density at low densities, reach minima at moderate densities, and then increase toward the freezing point. The reduced relaxation times at the minima and at the fluid-solid phase transition are all comparable for the various systems investigated, despite more than ten orders of magnitude difference in real systems. Important implications of these results are discussed.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054101"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847516","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
Laminar chaotic saddle within a turbulent attractor. 紊流吸引子内的层流混沌鞍。
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.L052202
Hibiki Kato, Miki U Kobayashi, Yoshitaka Saiki, James A Yorke
{"title":"Laminar chaotic saddle within a turbulent attractor.","authors":"Hibiki Kato, Miki U Kobayashi, Yoshitaka Saiki, James A Yorke","doi":"10.1103/PhysRevE.110.L052202","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.L052202","url":null,"abstract":"<p><p>Intermittent switchings between weakly chaotic (laminar) and strongly chaotic (bursty) states are often observed in systems with high-dimensional chaotic attractors, such as fluid turbulence. They differ from the intermittency of a low-dimensional system accompanied by the stability change of a fixed point or a periodic orbit in that the intermittency of a high-dimensional system tends to appear in a wide range of parameters. This paper considers a case where the skeleton of a laminar state L exists as a proper chaotic subset S of a chaotic attractor X, that is, S⊊X. We characterize such a laminar state L by a chaotic saddle S, which is densely filled with periodic orbits of different numbers of unstable directions. This study demonstrates the presence of chaotic saddles underlying intermittency in fluid turbulence and phase synchronization. Furthermore, we confirm that chaotic saddles persist for a wide range of parameters. Also, a kind of phase synchronization turns out to occur in the turbulent model.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5","pages":"L052202"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847274","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
Cross validation in stochastic analytic continuation. 随机分析延续中的交叉验证。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.055307
Gabe Schumm, Sibin Yang, Anders W Sandvik
{"title":"Cross validation in stochastic analytic continuation.","authors":"Gabe Schumm, Sibin Yang, Anders W Sandvik","doi":"10.1103/PhysRevE.110.055307","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.055307","url":null,"abstract":"<p><p>Stochastic analytic continuation (SAC) of quantum Monte Carlo (QMC) imaginary-time correlation function data is a valuable tool in connecting many-body models to experimentally measurable dynamic response functions. Recent developments of the SAC method have allowed for spectral functions with sharp features, e.g., narrow peaks and divergent edges, to be resolved with unprecedented fidelity. Often it is not known what exact sharp features, if any, are present a priori, and, due to the ill-posed nature of the analytic continuation problem, multiple spectral representations may be acceptable. In this work we borrow from the machine learning and statistics literature and implement a cross validation technique to provide an unbiased method to identify the most likely spectrum among a set obtained with different spectral parametrizations and imposed constraints. We demonstrate the power of this method with examples using imaginary-time data generated by QMC simulations and synthetic data generated from artificial spectra. Our procedure, which can be considered a form of model selection, can be applied to a variety of numerical analytic continuation methods, beyond just SAC.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-2","pages":"055307"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847298","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
Weak collisionless shocks mediated by ion gyroviscosity. 离子回旋粘度介导的弱无碰撞冲击。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.055204
Brett D Keenan
{"title":"Weak collisionless shocks mediated by ion gyroviscosity.","authors":"Brett D Keenan","doi":"10.1103/PhysRevE.110.055204","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.055204","url":null,"abstract":"<p><p>Collisionless shocks are ubiquitous in space and astrophysical plasmas, and they are essential dynamical features of these systems. Lacking Coulomb collisions, these shocks are mediated by the anomalous dissipation provided by nonlinear plasma instabilities. By numerically resolving the structure of a steady-state, ion gyroviscous shock, we show that ion gyroviscosity, alone, can produce weak (M≲1.1, where M is the sonic Mach number) shocks in a collisionless, magnetized plasma. We emphasize that this effect does not require an appeal to plasma microturbulence. Moreover, while most collisionless systems may be unsuitable to support purely gyroviscous shocks, we argue that gyro-viscous heating may be an overlooked mechanism, generally; and it may be a key driver within magnetohydrodynamic shocks at large. Representative examples include the plasma environments produced on the plasma liner experiment and the magnetized liner inertial fusion platforms.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-2","pages":"055204"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847312","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
Mahler measures, elliptic curves, and L-functions for the free energy of the Ising model. 马勒测量，椭圆曲线，和l函数的自由能的伊辛模型。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054134
Gandhimohan M Viswanathan
{"title":"Mahler measures, elliptic curves, and L-functions for the free energy of the Ising model.","authors":"Gandhimohan M Viswanathan","doi":"10.1103/PhysRevE.110.054134","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054134","url":null,"abstract":"<p><p>This work establishes links between the Ising model and elliptic curves via Mahler measures. First, we reformulate the partition function of the Ising model on the square, triangular, and honeycomb lattices in terms of the Mahler measure of a Laurent polynomial whose variety's projective closure defines an elliptic curve. Next, we obtain hypergeometric formulas for the partition functions on the triangular and honeycomb lattices and review the known series for the square lattice. Finally, at specific temperatures we express the free energy in terms of a Hasse-Weil L-function of an elliptic curve. At the critical point of the phase transition on all three lattices, we obtain the free energy more simply in terms of a Dirichlet L-function. These findings suggest that the connection between statistical mechanics and analytic number theory may run deeper than previously believed.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054134"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847368","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
Limited trust in social network games. 对社交网络游戏的信任有限。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054311
Timothy Murray, Jugal Garg, Rakesh Nagi
{"title":"Limited trust in social network games.","authors":"Timothy Murray, Jugal Garg, Rakesh Nagi","doi":"10.1103/PhysRevE.110.054311","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054311","url":null,"abstract":"<p><p>We consider agents in a social network competing to be selected as partners in collaborative, mutually beneficial activities. We study this through a model in which an agent i can initiate a limited number k_{i}>0 of games and selects partners from its one-hop neighborhood. Each agent can accept as many games offered by its neighbors. Each game signifies a productive joint activity, and the players attempt to maximize their individual utilities. Unsurprisingly, more trustworthy agents, as measured by the game-theoretic concept of limited-trust, are more desirable as partners. Agents learn about their neighbors' trustworthiness through interactions and their behaviors evolve in response. Empirical trials conducted on realistic social networks show that when given the option, many agents become highly trustworthy; most or all become highly trustworthy when knowledge of their neighbors' trustworthiness is based on past interactions rather than known a priori. This trustworthiness is not the result of altruism; instead, agents are intrinsically motivated to become trustworthy partners by competition. Two insights are presented: First, trustworthy behavior drives an increase in the utility of all agents, where maintaining a relatively minor level of trustworthiness may easily improve net utility by as much as 14.5%. If only one agent exhibits a small degree of trustworthiness among self-centered ones, then it can increase its personal utility by up to 25% in certain cases. Second, and counterintuitively, when partnership opportunities are abundant, agents become less trustworthy.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054311"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847387","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
Second law of thermodynamics: Spontaneous cold-to-hot heat transfer in a nonchaotic medium. 热力学第二定律：在非混沌介质中自发的冷-热热传递。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054113
Yu Qiao, Zhaoru Shang
{"title":"Second law of thermodynamics: Spontaneous cold-to-hot heat transfer in a nonchaotic medium.","authors":"Yu Qiao, Zhaoru Shang","doi":"10.1103/PhysRevE.110.054113","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054113","url":null,"abstract":"<p><p>It has long been known that, fundamentally different from a large body of rarefied gas, when a Knudsen gas is immersed in a thermal bath, it may never reach thermal equilibrium. The root cause is nonchaoticity: as the particle-particle collisions are sparse, the particle trajectories tend to be independent of each other. Usually, this counterintuitive phenomenon is studied through kinetic theory and is not considered a thermodynamic problem. In current research, we show that if incorporated in a compound setup, such an intrinsically nonequilibrium behavior has nontrivial consequences and cannot circumvent thermodynamics: cold-to-hot heat transfer may happen spontaneously, either continuously (with an energy barrier), or cyclically (with time-dependent entropy barriers). It allows for production of useful work by absorbing heat from a single thermal reservoir without any other effect. As the system obeys the first law of thermodynamics, it breaks the boundaries of the second law of thermodynamics.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054113"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847565","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
Shortcuts to adiabaticity in harmonic traps: A quantum-classical analog. 调和阱中绝热的捷径：量子经典类比。
IF 2.4 3区 物理与天体物理
Physical review. E Pub Date : 2024-11-01 DOI: 10.1103/PhysRevE.110.054138
Vincent Hardel, Giovanni Manfredi, Paul-Antoine Hervieux, Rémi Goerlich
{"title":"Shortcuts to adiabaticity in harmonic traps: A quantum-classical analog.","authors":"Vincent Hardel, Giovanni Manfredi, Paul-Antoine Hervieux, Rémi Goerlich","doi":"10.1103/PhysRevE.110.054138","DOIUrl":"https://doi.org/10.1103/PhysRevE.110.054138","url":null,"abstract":"<p><p>We present a technique for efficiently transitioning a quantum system from an initial to a final stationary state in less time than is required by an adiabatic (quasistatic) process. Our approach makes use of Nelson's stochastic quantization, which represents the quantum system as a classical Brownian process. Thanks to this mathematical analogy, known protocols for classical overdamped systems can be translated into quantum protocols. In particular, one can use classical methods to find optimal quantum protocols that minimize both the time duration and some other cost function to be freely specified. We have applied this method to the time-dependent harmonic oscillator and tested it on two different cost functions: (i) the cumulative energy of the system over time and (ii) the dynamical phase of the wave function. In the latter case, it is possible to construct protocols that are \"adiabatically optimal,\" i.e., they minimize their distance from an adiabatic process for a given duration.</p>","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"110 5-1","pages":"054138"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142847567","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信