Physical review. E最新文献

Third harmonic of the dynamic magnetic susceptibility of a concentrated ferrofluid: Numerical calculation and simple approximation formula 浓缩铁流体动态磁感应强度的三次谐波：数值计算和简单近似公式

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-19 DOI: 10.1103/physreve.110.034605

Michael S. Rusanov, Vladimir S. Zverev, Ekaterina A. Elfimova

{"title":"Third harmonic of the dynamic magnetic susceptibility of a concentrated ferrofluid: Numerical calculation and simple approximation formula","authors":"Michael S. Rusanov, Vladimir S. Zverev, Ekaterina A. Elfimova","doi":"10.1103/physreve.110.034605","DOIUrl":"https://doi.org/10.1103/physreve.110.034605","url":null,"abstract":"Information about the nonlinear magnetic response of dispersions of magnetic particles is the basis for biomedical applications. In this paper, using analytical and numerical methods, the third harmonic of the dynamic susceptibility of an ensemble of moving magnetic particles in an ac magnetic field with an arbitrary amplitude is studied, taking into account interparticle interactions. A simple approximation formula is proposed to predict the third harmonic as a function of two parameters: the Langevin susceptibility <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mi>χ</mi><mi>L</mi></msub></math>, which is used to estimate the particle dipole-dipole interactions, and the Langevin parameter <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>ξ</mi></math>, which represents the ratio of the energy of the magnetic moment interacting with the magnetic field to the thermal energy. The derived approximation formula corresponds with the known single-particle theories in the limit case of a small particle's concentration and is valid for concentrated dispersions of magnetic particles (with the Langevin susceptibility up to <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>χ</mi><mi>L</mi></msub><mo>≤</mo><mn>3</mn></mrow></math>) in high-amplitude ac fields (with the Langevin parameter up to <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>ξ</mi><mo>≤</mo><mn>10</mn></mrow></math>).","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"34 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142268590","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

Death-birth adaptive dynamics: modeling trait evolution 死亡-出生适应动态：性状进化建模

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-19 DOI: 10.1103/physreve.110.l032401

Ian Braga, Emmanuel Pereira, Lucas Wardil

引用次数: 0

Wakefield-driven filamentation of warm beams in plasma 等离子体中温束的瓦克菲尔德驱动丝状化

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-19 DOI: 10.1103/physreve.110.035208

Erwin Walter, John P. Farmer, Martin S. Weidl, Alexander Pukhov, Frank Jenko

引用次数: 0

Vibrational resonance in bichromatically excited diatomic molecules in a shifted molecular potential 偏移分子势中双色激发双原子分子的振动共振

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-19 DOI: 10.1103/physreve.110.034209

O. G. Abamba, O. T. Kolebaje, U. E. Vincent, P. V. E. McClintock

{"title":"Vibrational resonance in bichromatically excited diatomic molecules in a shifted molecular potential","authors":"O. G. Abamba, O. T. Kolebaje, U. E. Vincent, P. V. E. McClintock","doi":"10.1103/physreve.110.034209","DOIUrl":"https://doi.org/10.1103/physreve.110.034209","url":null,"abstract":"For bichromatically excited diatomic molecules modeled in a shifted Tietz-Wei molecular potential, we demonstrate the occurrence of vibrational resonance (VR) when a saddle-node (SN) bifurcation takes place and its nonoccurrence in the absence of an SN bifurcation. We have examined the VR phenomenon and its connection with SN bifurcation for eight diatomic molecules, namely, <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mi mathvariant=\"normal\">H</mi><mn>2</mn></msub><mo>,</mo><mo> </mo><msub><mi mathvariant=\"normal\">N</mi><mn>2</mn></msub><mo>,</mo><mo> </mo><msub><mi>Cl</mi><mn>2</mn></msub><mo>,</mo><mo> </mo><msub><mi mathvariant=\"normal\">I</mi><mn>2</mn></msub><mo>,</mo><mo> </mo><msub><mi mathvariant=\"normal\">O</mi><mn>2</mn></msub></math>, HF, CO, and NO, consisting of homogeneous, heterogenous, and halogen molecules. We demonstrate that each of them vibrates at a distinct resonant frequency but with a spread in frequency. The high-frequency amplitude at which VR occurs corresponds to the SN-bifurcation point. We validate our analytic results by numerical simulations and show that the homonuclear halogens respond only weakly to bichromatic fields, which may perhaps be linked to their absence of SN bifurcation.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"6 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142268589","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

Theoretical analysis of the structure, thermodynamics, and shear elasticity of deeply metastable hard sphere fluids 深层可蜕变硬球流体的结构、热力学和剪切弹性理论分析

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-19 DOI: 10.1103/physreve.110.034606

Subhasish Chaki, Baicheng Mei, Kenneth S. Schweizer

{"title":"Theoretical analysis of the structure, thermodynamics, and shear elasticity of deeply metastable hard sphere fluids","authors":"Subhasish Chaki, Baicheng Mei, Kenneth S. Schweizer","doi":"10.1103/physreve.110.034606","DOIUrl":"https://doi.org/10.1103/physreve.110.034606","url":null,"abstract":"The structure, thermodynamics, and slow activated dynamics of the equilibrated metastable regime of glass-forming fluids remain a poorly understood problem of high theoretical and experimental interest. We apply a highly accurate microscopic equilibrium liquid state integral equation theory, in conjunction with naïve mode coupling theory of particle localization, to study in a unified manner the structural correlations, thermodynamic properties, and dynamic elastic shear modulus in deeply metastable hard sphere fluids. Distinctive behaviors are predicted including divergent inverse critical power laws for the contact value of the pair correlation function, pressure, and inverse dimensionless compressibility, and a splitting of the second peak and large suppression of interstitial configurations of the pair correlation function. The dynamic elastic modulus is predicted to exhibit two distinct exponential growth regimes with packing fraction that have strongly different slopes. These thermodynamic, structural, and elastic modulus results are consistent with simulations and experiments. Perhaps most unexpectedly, connections between the amplitude of long wavelength density fluctuations, dimensionless compressibility, local structure, and the dynamic elastic shear modulus have been theoretically elucidated. These connections are more broadly relevant to understanding the slow activated relaxation and mechanical response of colloidal suspensions in the ultradense metastable region and deeply supercooled thermal liquids in equilibrium.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"4 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251442","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

Erratum: General existence and determination of conjugate fields in dynamically ordered magnetic systems [Phys. Rev. E 104, 044125 (2021)] 勘误：动态有序磁系统中共轭场的一般存在和确定 [Phys. Rev. E 104, 044125 (2021)]

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-19 DOI: 10.1103/physreve.110.039901

M. Quintana, A. Berger

引用次数: 0

Attractive-repulsive interaction in coupled quantum oscillators 耦合量子振荡器中的吸引-排斥相互作用

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-19 DOI: 10.1103/physreve.110.034210

Bulti Paul, Biswabibek Bandyopadhyay, Tanmoy Banerjee

引用次数: 0

Resource-based modelling approach to studying evolutionary rescue 研究进化救援的资源建模方法

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-18 DOI: 10.1103/physreve.110.034406

Viviane M. Oliveira, Paulo R. A. Campos

{"title":"Resource-based modelling approach to studying evolutionary rescue","authors":"Viviane M. Oliveira, Paulo R. A. Campos","doi":"10.1103/physreve.110.034406","DOIUrl":"https://doi.org/10.1103/physreve.110.034406","url":null,"abstract":"In this paper, we present an in-depth investigation into the dynamics of evolutionary rescue using a resource-based modelling approach. Utilizing classical consumer-resource models, we aim to understand how species can adapt to abrupt environmental changes that alter the availability of substitutable resources. Through both analytical solutions and simulation-based techniques, we explore the conditions under which populations can recover from critical sizes and avoid extinction. Our findings highlight the importance of minimum viable population sizes, mutation rates, and the adaptive capacity of metabolic strategies in influencing population resilience. We demonstrate that while increased mutation rates can facilitate faster recovery by enabling populations to evolve new metabolic strategies suited to the altered resource landscape, populations starting with smaller sizes or facing severe reductions in resource availability are more susceptible to extinction. This study offers valuable insights into the interplay between ecological dynamics and evolutionary mechanisms, providing a comprehensive framework for predicting population persistence and informing conservation strategies under changing environmental conditions.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"42 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251447","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

Electron surface scattering kernel for a plasma facing a semiconductor 面向半导体的等离子体的电子表面散射核

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-18 DOI: 10.1103/physreve.110.035207

F. X. Bronold, F. Willert

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Coexistence of multistable synchronous states in a three-oscillator system with higher-order interaction 具有高阶相互作用的三振荡器系统中多稳同步状态的共存

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2024-09-18 DOI: 10.1103/physreve.110.034311

Xuan Wang, Haihong Li, Qionglin Dai, Junzhong Yang

引用次数: 0