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The scattering problem for two particles interacting via the Coulomb potential is examined for the case where the potential has a sharp cut-off at some distance. The problem is solved for two complimentary situations, firstly when the…

核理论 · 物理学 2015-05-18 S L Yakovlev , M V Volkov , E Yarevsky , N Elander

We discuss the scattering function of a Gaussian random polygon with N nodes under a given topological constraint through simulation. We obtain the Kratky plot of a Gaussian polygon of N=200 having a fixed knot for some different knots such…

软凝聚态物质 · 物理学 2009-11-11 Miyuki K. Shimamura , Kumiko Kamata , Akihisa Yao , Tetsuo Deguchi

Using molecular dynamics simulations we examine the dynamics of a family of model polymers with varying chain length and torsional potential barriers. We focus on features of the dynamics of polymers that are seen experimentally but absent…

软凝聚态物质 · 物理学 2019-06-11 Daniel Fragiadakis , C. Michael Roland

Diffusion properties of a self-avoiding polymer embedded in regularly distributed obstacles with spacing a=20 and confined in two dimensions is studied numerically using the extended bond fluctuation method which we have developed recently.…

软凝聚态物质 · 物理学 2009-10-31 Ryuzo Azuma , Hajime Takayama

We investigate conformations and dynamics of a polymer considering its monomers to be active Brownian particles. This active polymer shows very intriguing physical behavior which is absent in an active Rouse chain. The chain initially…

软凝聚态物质 · 物理学 2020-04-13 Shalabh K. Anand , Sunil P. Singh

The conformational and electronic properties of conducting flexible random and self-avoiding walk polymer chains are under investigation. A Hamiltonian for conjugated flexible polymers is introduced and its physical consequences are…

凝聚态物理 · 物理学 2009-10-22 M. Otto , T. A. Vilgis

We report extensive simulations of the relaxation dynamics of a self-avoiding polymer confined inside a cylindrical pore. In particular, we concentrate on examining how confinement influences the scaling behavior of the global relaxation…

软凝聚态物质 · 物理学 2009-11-13 A. Arnold , B. Bozorgui , D. Frenkel , B. -Y. Ha , S. Jun

We calculate the second and third virial coefficients of the effective sphere-sphere interaction due to polymer depletion. By utilizing the anisotropy of a typical polymer conformation, we can consider polymers that are roughly the same…

软凝聚态物质 · 物理学 2009-10-31 Mario Triantafillou , Randall D. Kamien

We analyze scattering in a system of two (distinguishable) particles moving on the half-line $\overline{\rz}_+$ under the influence of singular two-particle interactions. Most importantly, due to the spatial localization of the interactions…

数学物理 · 物理学 2018-11-14 Sebastian Egger , Joachim Kerner

We study the conformations of a self-avoiding polymer confined to a channel by computing the cross-sectional distributions of the positions of its monomers. By means of Monte-Carlo simulations for a self-avoiding, freely-jointed chain we…

软凝聚态物质 · 物理学 2013-11-11 E. Werner , F. Westerlund , J. O. Tegenfeldt , B. Mehlig

We discuss the probability of random knotting for a model of self-avoiding polygons whose segments are given by cylinders of unit length with radius $r$. We show numerically that the characteristic length of random knotting is roughly…

统计力学 · 物理学 2009-10-31 Miyuki K. shimamura , Tetsuo Deguchi

We study the multifractal properties of diffusion in the presence of an absorbing polymer and report the numerical values of the multifractal dimension spectra for the case of an absorbing self avoiding walk or random walk.

凝聚态物理 · 物理学 2007-05-23 Christian von Ferber , Yurij Holovatch

Utilizing the scales theory of electromagnetic theory, the anisotropic dielectric material is reconstructed into an isotropic medium. The analytic expressions of scattering field and the scattering breadth for an anisotropic material…

经典物理 · 物理学 2010-09-15 Y-L Li , J Li

The scattering matrix which describes low-energy, non-relativistic scattering of spin-1/2 fermions interacting via finite-range potentials can be obtained from a geometric action principle in which space and time do not appear explicitly…

量子物理 · 物理学 2022-04-13 Silas R. Beane , Roland C. Farrell

Controlling the structure of polymer solutions near a solid surface is crucial for many industrial processes, as it significantly impacts solution flow and influences slip at the interface. To date, only a few techniques have been developed…

We present an analysis of the impact of structural disorder on the static scattering function of f-armed star branched polymers in d dimensions. To this end, we consider the model of a star polymer immersed in a good solvent in the presence…

软凝聚态物质 · 物理学 2012-10-09 V. Blavatska , C. von Ferber , Yu. Holovatch

We performed a series of simulations for a linear polymer chain in a solvent using dissipative particle dynamics to check the scaling relations for the end-to-end distance, radius of gyration and hydrodynamic radius in three dimensions. The…

软凝聚态物质 · 物理学 2009-04-03 J. M. Ilnytskyi , Yu. Holovatch

We introduce a deep learning approach for analyzing the scattering function of the polydisperse hard spheres system. We use a variational autoencoder-based neural network to learn the bidirectional mapping between the scattering function…

软凝聚态物质 · 物理学 2025-08-18 Lijie Ding , Changwoo Do

We investigated the Karman vortex behind a circular cylinder in a polymer solution by a molecular dynamics simulation. The vortex characteristics are distinctly different for short and long polymers. The solution with the long polymer…

软凝聚态物质 · 物理学 2018-04-13 Yuta Asano , Hiroshi Watanabe , Hiroshi Noguchi

The massive field theory approach in fixed space dimensions $d=3$ is applied to investigate a dilute solution of long-flexible polymer chains in a good solvent between two parallel repulsive walls, two inert walls and for the mixed case of…

软凝聚态物质 · 物理学 2009-10-08 D. Romeis , Z. Usatenko