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A parameterization strategy for molecular models on the basis of force fields is proposed, which allows a rapid development of models for small molecules by using results from quantum mechanical (QM) ab initio calculations and thermodynamic…

化学物理 · 物理学 2009-04-22 Bernhard Eckl , Jadran Vrabec , Hans Hasse

A model for the dynamics of a classical point charged particle interacting with higher order jet fields is introduced. In this model, the dynamics of the charged particle is described by an implicit ordinary second order differential…

数学物理 · 物理学 2020-03-10 Ricardo Gallego Torromé

One of the main challenges in diffusion-based molecular communication is dealing with the non-linearity of reaction-diffusion chemical equations. While numerical methods can be used to solve these equations, a change in the input signals or…

信息论 · 计算机科学 2021-06-04 Hamidreza Abin , Amin Gohari , Masoumeh Nasiri-Kenari

Particles bound to an interface interact because they deform its shape. The stresses that result are fully encoded in the geometry and described by a divergence-free surface stress tensor. This stress tensor can be used to express the force…

软凝聚态物质 · 物理学 2007-05-23 Martin Michael Mueller , Markus Deserno , Jemal Guven

Finite-time coherent sets represent minimally mixing objects in general nonlinear dynamics, and are spatially mobile features that are the most predictable in the medium term. When the dynamical system is subjected to small parameter…

动力系统 · 数学 2021-04-14 Fadi Antown , Gary Froyland , Oliver Junge

The aim of this paper is to revisit the calculation of atom-surface quantum friction in the quantum field theory formulation put forward by Barton [New J. Phys. 12 (2010) 113045]. We show that the power dissipated into field excitations and…

Two main approaches in particle-based simulations for modeling a charged surface are using explicit, discrete charges and continuum, uniform charges. It is well-known that these two approaches could lead to substantially distinct ionic…

软凝聚态物质 · 物理学 2022-08-02 Jiaxing Yuan , Yanwei Wang

We use a perturbative approach to evaluate transition amplitudes corresponding to quantum friction, for a scalar model describing an atom which moves at a constant velocity, close to a material plane. In particular, we present results on…

高能物理 - 理论 · 物理学 2023-08-29 Aitor Fernández , C. D. Fosco

Using self-avoiding walk model on three-dimensional Sierpinski fractals (3d SF) we have studied critical properties of self-interacting linear polymers in porous environment, via exact real-space renormalization group (RG) method. We have…

统计力学 · 物理学 2007-05-23 Jelena Maricic , Suncica Elezovic-Hadzic

We provide a concise review on recent theory advancements towards full-fledged (3+1)D dynamical descriptions of relativistic nuclear collisions at finite baryon density. Heavy-ion collisions at different collision energies produce…

核理论 · 物理学 2021-10-27 Shanjin Wu , Chun Shen , Huichao Song

Understanding the interactions between atoms and light is at the heart of atomic physics. Being able to `experiment' with various system parameters, produce plots of the results and interpret these is very useful, especially for those new…

原子物理 · 物理学 2023-08-01 Lucy Downes

An exact transformation method is introduced that reduces the governing equations of a continuum structure coupled to strong nonlinearities to a low dimensional equation with memory. The method is general and well suited to problems with…

动力系统 · 数学 2014-03-05 Robert Szalai

In this paper, we first consider linear 2D and 3D convection-diffusion-reaction equations $-\nabla\cdot (\kappa \nabla u) + {\bm v} \cdot \nabla u + \lambda u = \phi$ and $u_t - \nabla\cdot (\kappa \nabla u) + {\bm v} \cdot \nabla u +…

数值分析 · 数学 2026-03-18 Qiwei Feng

In this paper, a functional model of interactions in quantum theory (QT) is proposed. A functional model describes the dynamic evolution of a physical system in terms of process steps and intermediate states. That is, it describes how…

量子物理 · 物理学 2015-01-06 Hans H. Diel

A theory of electronic friction is developed using the exact factorization of the electron-nuclear wavefunction. No assumption is made regarding the electronic bath, which can be made of independent or interacting electrons, and the nuclei…

量子物理 · 物理学 2022-06-01 Rocco Martinazzo , Irene Burghardt

We reconsider the footprints of radiation friction in a head-on collision of a bunch of relativistic charged particles with a laser pulse by demonstrating that forward and backward radiation and radiation friction are coherently enhanced in…

等离子体物理 · 物理学 2026-05-29 E. G. Gelfer , A. M. Fedotov , M. P. Malakhov , O. Klimo , S. Weber

Relativistic effects in the thermodynamical properties of interacting particle systems are investigated within the framework of the relativistic direct interaction theory in various forms of dynamics. In the front form of relativistic…

高能物理 - 理论 · 物理学 2007-05-23 V. Tretyak

After two decades of a development of the unitary and analytic models of the electromagnetic structure of hadrons and nuclei their main principles are briefly formulated, then a general scheme of their applications to the electromagnetic,…

高能物理 - 唯象学 · 物理学 2007-05-23 S. Dubnicka , A. Z. Dubnickova , P. Strizenec

This paper deals with the solution of unified fractional reaction-diffusion systems. The results are obtained in compact and elegant forms in terms of Mittag-Leffler functions and generalized Mittag-Leffler functions, which are suitable for…

经典分析与常微分方程 · 数学 2014-09-11 R. K. Saxena , A. M. Mathai , H. J. Haubold

In this contribution, I present a short overview of the theory of direct nuclear reactions, with special emphasis on the case of reactions induced by weakly-bound nuclei. After introducing some general results of quantum scattering theory,…

核理论 · 物理学 2019-02-06 Antonio M. Moro