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相关论文: Universal scaling of segment fluctuations in polym…

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Monte Carlo simulations of coarse-grained polymers provide a useful tool to deepen the understanding of conformational and statistical properties of polymers both in physical as well as in biological systems. In this study we sample compact…

软凝聚态物质 · 物理学 2009-05-07 Manfred Bohn , Dieter W. Heermann

We present a unifying picture of the compact, dense and dilute phases of two-dimensional polymers. The lattice dependence of the scaling exponents for compact polymers is reconciled with their universality in the dense and dilute case. In…

统计力学 · 物理学 2007-05-23 Jesper Lykke Jacobsen , Jane' Kondev

Inhomogeneities in deposition may lead to formation of rough surfaces, whose height fluctuations can be probed directly by scanning microscopy, or indirectly by scattering. Analytical or numerical treatments of simple growth models suggest…

凝聚态物理 · 物理学 2009-10-28 Mehran Kardar

Complex systems consist of many interacting elements which participate in some dynamical process. The activity of various elements is often different and the fluctuation in the activity of an element grows monotonically with the average…

物理与社会 · 物理学 2008-04-24 Zoltan Eisler , Imre Bartos , Janos Kertesz

Many fluctuating systems consist of macroscopic structures in addition to noisy signals. Thus, for this class of fluctuating systems, the scaling behaviors are very complicated. Such phenomena are quite commonly observed in Nature, ranging…

统计力学 · 物理学 2007-05-23 Ning-Ning Pang , Hisen-Ching Kao , Wen-Jer Tzeng

We present the first experimental study of mesoscopic fluctuations of Coulomb drag in a system with two layers of composite fermions, which are seen when either the magnetic field or carrier concentration are varied. These fluctuations…

介观与纳米尺度物理 · 物理学 2015-05-14 A. S. Price , A. K. Savchenko , D. A. Ritchie

We present a study of the scaling properties of cluster-cluster aggregation with a source of monomers in the stationary state when the spatial transport of particles occurs by Levy flights. We show that the transition from mean-field…

经典物理 · 物理学 2010-05-11 Colm Connaughton , Jamie Harris

We study asymptotic properties of diffusion and other transport processes (including self-avoiding walks and electrical conduction) on large randomly branched polymers using renormalized dynamical field theory. We focus on the swollen phase…

统计力学 · 物理学 2015-06-04 Hans-Karl Janssen , Olaf Stenull

We present an in-depth multi-scale analysis of the conformations and dynamics of polar active polymers, comparing very dilute and very dense conditions. We unveil characteristic length and time scales, common to both dilute and dense…

软凝聚态物质 · 物理学 2024-04-15 Mattia Alberto Ubertini , Emanuele Locatelli , Angelo Rosa

We present the results of a series of one-dimensional N-body and hydrodynamical simulations which have been used for testing the different clustering properties of baryonic and dark matter in an expanding background. Initial Gaussian random…

天体物理学 · 物理学 2015-06-24 Claudio Gheller , Lauro Moscardini , Ornella Pantano

Turbulence develops in any stressed flow when the scales of the forcing are much larger than those of the dissipation. In neutral fluids, it consists of chaotic motions in physical space but with a universal energy spectrum in Fourier…

We present here computational work on the center-of-mass displacements in thin polymer films of finite width without topological constraints and without momentum conservation obtained using a well-known lattice Monte Carlo algorithm with…

软凝聚态物质 · 物理学 2015-06-03 J. P. Wittmer , N. Schulmann , P. Polińska , J. Baschnagel

Direct correlation between temporal structural fluctuations and electron wind force is demonstrated, for the first time, by STM imaging and analysis of atomically-resolved motion on a thin film surface under large applied current (10e5…

材料科学 · 物理学 2007-05-23 O. Bondarchuk , W. G. Cullen , M. Degawa , Ellen D. Williams

During polymer translocation driven by e.g. voltage drop across a nanopore, the segments in the cis-side is incessantly pulled into the pore, which are then pushed out of it into the trans-side. This pulling and pushing polymer segments are…

软凝聚态物质 · 物理学 2015-06-16 Takuya Saito , Takahiro Sakaue

We extend the procedure outlined in [Basse, "Scaling of global properties of fluctuating and mean streamwise velocities in pipe flow: Characterization of a high Reynolds number transition region," Phys. Fluids Vol. 33, 065127 (2021)] to…

流体动力学 · 物理学 2021-12-15 Nils T. Basse

Recent experiments suggest that shear-enhanced growth of concentration fluctuations in polymer solutions is strongly influenced by solid boundaries. We analyze the dynamics of a model of a sheared polymer solution, accounting for the effect…

软凝聚态物质 · 物理学 2009-11-07 William B. Black , Michael D. Graham

Within the framework of a (1+1)--dimensional model which mimics high energy QCD, we study the behavior of the cross sections for inclusive and diffractive deep inelastic $\gamma^*h$ scattering cross sections. We analyze the cases of both…

高能物理 - 唯象学 · 物理学 2012-09-28 M. B. Gay Ducati , E. G. de Oliveira , J. T. de Santana Amaral

Spurred by theoretical predictions from Spohn and coworkers [Phys. Rev. E {\bf 69}, 035102(R) (2004)], we rederived and extended their result heuristically as well as investigated the scaling properties of the associated Langevin equation…

统计力学 · 物理学 2015-01-12 T. L. Einstein , Alberto Pimpinelli

The evolution of small scale cosmological perturbations is carefully re-examined. Through the interaction with photons via electrons, baryon perturbations show interesting behavior in some physical scales. Characteristic features of the…

天体物理学 · 物理学 2009-10-30 Kazuhiro Yamamoto , Naoshi Sugiyama , Humitaka Sato

We study the dynamics of driven polymer translocation using both molecular dynamics (MD) simulations and a theoretical model based on the non-equilibrium tension propagation on the {\it cis} side subchain. We present theoretical and…

软凝聚态物质 · 物理学 2015-06-12 Timo Ikonen , Aniket Bhattacharya , Tapio Ala-Nissila , Wokyung Sung