Physical review. E最新文献_第5页

Kardar-Parisi-Zhang growth in ɛ dimensions and beyond. 卡尔达-帕里西-张增长在50维及以上。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.014147

Timothy Halpin-Healy

{"title":"Kardar-Parisi-Zhang growth in ɛ dimensions and beyond.","authors":"Timothy Halpin-Healy","doi":"10.1103/PhysRevE.111.014147","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.014147","url":null,"abstract":"We examine anew the relationship of directed polymers in random media on traditional hypercubic versus hierarchical lattices, with the goal of understanding the dimensionality dependence of the essential scaling index β at the heart of the Kardar-Parisi-Zhang universality class. A seemingly accurate, but entirely empirical, ansatz due to Perlsman and Schwartz, proposed many years ago, can be put in proper context by anchoring the connection between these distinct lattice types at vanishing dimensionality. We graft together complementary perturbative field-theoretic and nonperturbative real-space renormalization group tools to establish the necessary connection, thereby elucidating the central mystery underlying the ansatz's uncanny apparent success, but also revealing its intrinsic limitations. Furthermore, we perform an extensive Euler integration of the KPZ equation in 3+1 dimensions which, bolstered by a separate directed polymer simulation, allows us an estimate for the critical exponent β_{3+1}^{KPZ}=0.1845(4) that greatly improves upon all previous Monte Carlo calculations in this regard and rules out the Perlsman-Schwartz value, 0.1882^{+}, in that dimension. Finally, leveraging this hybrid RG partnership permits us a versatile, more potent, tool to explore the general KPZ problem across dimensions, as well as a conjecture for its key critical exponent, β=1/2-0.22967ɛ, as ɛ→0, testable in a three-loop calculation.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"111 1-1","pages":"014147"},"PeriodicalIF":2.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143459044","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

Ballistic modes as a source of anomalous charge noise. 作为异常电荷噪声源的弹道模式。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.015410

Ewan McCulloch, Romain Vasseur, Sarang Gopalakrishnan

引用次数: 0

Granular gases under resetting. 重设中的颗粒气体。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.015405

Anna S Bodrova, Aleksei V Chechkin, Awadhesh Kumar Dubey

引用次数: 0

Critical temperature of the classical XY model via autoencoder latent space sampling. 经典XY模型的临界温度通过自编码器潜在空间采样。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.015305

Brandon Willnecker, Mervlyn Moodley

引用次数: 0

Modeling adhesion in stochastic and mean-field models of cell migration. 在细胞迁移的随机和平均场模型中建模粘附。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.014419

Shahzeb Raja Noureen, Richard L Mort, Christian A Yates

{"title":"Modeling adhesion in stochastic and mean-field models of cell migration.","authors":"Shahzeb Raja Noureen, Richard L Mort, Christian A Yates","doi":"10.1103/PhysRevE.111.014419","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.014419","url":null,"abstract":"Adhesion between cells plays an important role in many biological processes such as tissue morphogenesis and homeostasis, wound healing, and cancer cell metastasis. From a mathematical perspective, adhesion between multiple cell types has been previously analyzed using discrete and continuum models, including the cellular Potts models and partial differential equations (PDEs). While these models can represent certain biological situations well, cellular Potts models can be computationally expensive, and continuum models capture only the macroscopic behavior of a population of cells, ignoring stochasticity and the discrete nature of cell dynamics. Cellular automaton models allow us to address these problems and can be used for a wide variety of biological systems. In this paper we consider a cellular automaton approach and develop an on-lattice agent-based model (ABM) for cell migration and adhesion in a population composed of two cell types. By deriving and comparing the corresponding PDEs to the ABM, we demonstrate that cell aggregation and cell sorting are not possible in the PDE model. Therefore, we propose a set of discrete mean equations which better capture the behavior of the ABM in one and two dimensions.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"111 1-1","pages":"014419"},"PeriodicalIF":2.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143459148","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

Effect of frequency-dependent shear and volume viscosities on molecular friction in liquids. 频率相关剪切粘度和体积粘度对液体中分子摩擦的影响。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.015104

Henrik Kiefer, Domenico Vitali, Benjamin A Dalton, Laura Scalfi, Roland R Netz

{"title":"Effect of frequency-dependent shear and volume viscosities on molecular friction in liquids.","authors":"Henrik Kiefer, Domenico Vitali, Benjamin A Dalton, Laura Scalfi, Roland R Netz","doi":"10.1103/PhysRevE.111.015104","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.015104","url":null,"abstract":"The relation between the frequency-dependent friction of a molecule in a liquid and the hydrodynamic properties of the liquid is fundamental for molecular dynamics. We investigate this connection for a water molecule moving in liquid water using all-atomistic molecular dynamics (MD) simulations and linear hydrodynamic theory. We analytically calculate the frequency-dependent friction of a sphere with finite surface slip moving in a viscoelastic compressible fluid by solving the linear transient Stokes equation, including frequency-dependent shear and volume viscosities, both determined from MD simulations of bulk liquid water. From MD simulation trajectories, we also determine the frequency-dependent friction of a single water molecule moving in liquid water, as defined by the generalized Langevin equation. The frequency dependence of the shear viscosity of liquid water requires careful consideration of hydrodynamic finite-size effects to observe the asymptotic hydrodynamic power-law tail. By fitting the effective sphere radius and the slip length, the frequency-dependent friction and velocity autocorrelation function from the transient Stokes equation and simulations quantitatively agree. This shows that the transient Stokes equation accurately describes the important features of the frequency-dependent friction of a single water molecule in liquid water and thus applies down to molecular length and time scales, provided accurate frequency-dependent viscosities are used. In contrast, for a methane molecule moving in water, the frequency-dependent friction cannot be predicted based on a homogeneous model, which, supported by the extraction of the frequency-dependent surface slip, suggests that a methane molecule is surrounded by a finite-thickness hydration layer with viscoelastic properties that differ significantly from those of bulk water.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"111 1-2","pages":"015104"},"PeriodicalIF":2.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143459151","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

Coupling-induced tunable oscillations in loops of even-numbered bistable systems. 偶双稳系统环中耦合诱导的可调谐振荡。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.014226

Haowen Wan, Huaping Lü, Xiaoming Liang

引用次数: 0

Erratum: Evidence that the de Almeida-Thouless transition disappears below six dimensions [Phys. Rev. E 110, 054131 (2024)]. 勘误：de Almeida-Thouless跃迁在六维以下消失的证据[物理学]。[j].中国生物医学工程学报，2011,29(5):1104 - 1104。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.019902

Bharadwaj Vedula, M A Moore, Auditya Sharma

引用次数: 0

Multicontact statistics distinguish models of chromosome organization. 多重接触统计区分染色体组织模式。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.014403

Janni Harju, Joris J B Messelink, Chase P Broedersz

{"title":"Multicontact statistics distinguish models of chromosome organization.","authors":"Janni Harju, Joris J B Messelink, Chase P Broedersz","doi":"10.1103/PhysRevE.111.014403","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.014403","url":null,"abstract":"Chromosome organization can be modeled using various approaches, ranging from mechanistic bottom-up models to models inferred directly from experimental data. Many such models can recapitulate experimental Hi-C data for pairwise contact probabilities, meaning that these data cannot always be used to distinguish different models. Here, we consider two illustrative example models for bacterial chromosome organization: one a bottom-up model for loop extrusion, the other a data-driven maximum entropy model inferred from Hi-C data. We find that despite predicting similar pairwise contact frequencies, the models predict qualitatively different features on three-point contact maps. We explain these differences by constructing analytical approximations for three-point contact probabilities in each model. Finally, we apply our analytical approximations to previously published experimental multicontact data from human chromosomes, and find that these data are well described by the loop extruder approximation. Our work illustrates how multicontact statistics can be used to compare and test models for chromosome organization.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"111 1-1","pages":"014403"},"PeriodicalIF":2.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143459170","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

Diffusion of active particles driven by odd interactions. 由奇相互作用驱动的活性粒子的扩散。

IF 2.4 3区物理与天体物理

Physical review. E Pub Date : 2025-01-01 DOI: 10.1103/PhysRevE.111.014105

Rui-Xue Guo, Jia-Jian Li, Bao-Quan Ai

{"title":"Diffusion of active particles driven by odd interactions.","authors":"Rui-Xue Guo, Jia-Jian Li, Bao-Quan Ai","doi":"10.1103/PhysRevE.111.014105","DOIUrl":"https://doi.org/10.1103/PhysRevE.111.014105","url":null,"abstract":"Odd systems do not conserve energy, violate time-reversal symmetry, and remain far from equilibrium. How odd interactions between particles affect their diffusion remains unknown. To investigate this issue, we studied the diffusion and glass transition of a two-dimensional Kob-Andersen mixture, where Brownian particles interact via the Lennard-Jones potential and nonconservative odd forces. Our findings indicate a significant influence of odd interactions on the system's diffusion dynamics. Odd interactions always promote diffusion. These interactions lead to a nonmonotonic relationship between the effective diffusion coefficient and particle number density. Specifically, in systems with low oddness, the diffusion coefficient decreases steadily with increasing particle number density. Conversely, in systems with moderate oddness, an optimal particle number density exists that maximizes the diffusion coefficient. For systems with high oddness, we observe two distinct peaks in the diffusion coefficient-particle number density relationship. Furthermore, our investigation into the glass transition under dense conditions reveals that adjusting the oddness at low temperatures can induce a transition from a glassy state to a liquid state. Our findings offer a deeper insight into the diffusion processes in systems with odd interactions from a critical perspective.","PeriodicalId":20085,"journal":{"name":"Physical review. E","volume":"111 1-1","pages":"014105"},"PeriodicalIF":2.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143459240","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