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The Weissenberg effect, or rod-climbing phenomenon, occurs in non-Newtonian fluids where the fluid interface ascends along a rotating rod. Despite its prominence, theoretical insights into this phenomenon remain limited. In earlier work,…

The identification of trajectories that contribute to the reaction rate is the crucial dynamical ingredient in any classical chemical reactivity calculation. This problem often requires a full scale numerical simulation of the dynamics, in…

统计力学 · 物理学 2012-06-20 Thomas Bartsch , F. Revuelta , R. M. Benito , F. Borondo

Equilibrium rate theories play a crucial role in understanding rare, reactive events. However, they are inapplicable to a range of irreversible processes in systems driven far from thermodynamic equilibrium like active and biological…

统计力学 · 物理学 2025-10-21 Eric R. Heller , David T. Limmer

This work inspects the thermally activated transfer of solute particles across the interface between two interstitial solid solution phases that equilibrate internally by fast diffusion on conserved arrays of sites. When each phase is…

材料科学 · 物理学 2026-01-30 Jörg Weissmüller

We investigate the influence of a stochastically fluctuating step-barrier potential on bimolecular reaction rates by exact analytical theory and stochastic simulations. We demonstrate that the system exhibits a new resonant reaction…

化学物理 · 物理学 2016-03-23 Jakob J. Kolb , Stefano Angioletti-Uberti , Joachim Dzubiella

In chemical reactions, trajectories typically turn from reactants to products when crossing a dividing surface close to the normally hyperbolic invariant manifold (NHIM) given by the intersection of the stable and unstable manifolds of a…

化学物理 · 物理学 2020-11-10 Manuel Kuchelmeister , Johannes Reiff , Jörg Main , Rigoberto Hernandez

In non-relativistic field theories, quantum fluctuations give rise to dissipative behaviour even at zero temperature. Here we use holographic methods to explore the dissipative dynamics of massive particles coupled to quantum critical…

高能物理 - 理论 · 物理学 2013-05-30 David Tong , Kenny Wong

Interacting-Particle Reaction Dynamics (iPRD) simulates the spatiotemporal evolution of particles that experience interaction forces and can react with one another. The combination of interaction forces and reactions enable a wide range of…

化学物理 · 物理学 2018-07-20 Christoph Fröhner , Frank Noé

Hybrid Inflation is a two-field model where inflation ends by a tachyonic instability, the duration of which is determined by stochastic effects and has important observational implications. Making use of the recursive approach to the…

高能物理 - 理论 · 物理学 2013-11-13 Laurence Perreault Levasseur , Vincent Vennin , Robert Brandenberger

The time evolution of the thermally activated decay rates is considered. This evolution is of particular importance for the recent nanoscale experiments discussed in the literature, where the potential barrier is relatively low (or the…

统计力学 · 物理学 2021-04-21 Maria Chushnyakova , Igor Gontchar , Natalya Khmyrova

Reaction-diffusion systems, which consist of the reacting particles subject to diffusion process, constitute one of the common examples of non-linear statistical systems. In low space dimensions $d \leq 2$ the usual description by means of…

统计力学 · 物理学 2023-10-24 Michal Hnatič , Matej Kecer , Tomáš Lučivjanský

Akin to the traditional quasi-classical trajectory method for investigating the dynamics on a single adiabatic potential energy surface for an elementary chemical reaction, we carry out the dynamics on a 2-state ab initio potential energy…

A one-dimensional model on a line of the length L is investigated, which involves particle diffusion as well as single particle annihilation. There are also creation and annihilation at the boundaries. The static and dynamical behaviors of…

数学物理 · 物理学 2014-03-17 Mohammad Khorrami , Amir Aghamohammadi

Although redistribution of red blood cells at bifurcated vessels is highly dependent on flow rate, it is still challenging to quantitatively express the dependency of flow rate in plasma skimming due to nonlinear cellular interactions. We…

定量方法 · 定量生物学 2017-05-03 Jiho Yang , Sung Sic Yoo , Tae-Rin Lee

The dynamics of fronts, such as chemical reaction fronts, propagating in two-dimensional fluid flows can be remarkably rich and varied. For time-invariant flows, the front dynamics may simplify, settling in to a steady state in which the…

斑图形成与孤子 · 物理学 2016-01-20 John R. Mahoney , John Li , Carleen Boyer , Tom Solomon , Kevin A. Mitchell

We study the thermodynamic behavior of nonpolar liquid mixtures in the vicinity of curved charged objects, such as electrodes or charged colloids. For small enough charge on the object, or equivalently, small potential, the…

统计力学 · 物理学 2009-11-13 Gilad Marcus , Sela Samin , Yoav Tsori

Two-particle angular correlation for charged particles emitted in Au+Au collisions at the center-of-mass of 200 MeV measured at RHIC energies revealed novel structures commonly referred to as a near-side ridge. The ridge phenomenon in…

核理论 · 物理学 2011-02-11 M. S. Borysova , Iu. A. Karpenko , Yu. M. Sinyukov

We apply Thermostatted Ring Polymer Molecular Dynamics (TRPMD), a recently-proposed approximate quantum dynamics method, to the computation of thermal reaction rates. Its short-time Transition-State Theory (TST) limit is identical to…

化学物理 · 物理学 2015-08-20 Timothy J. H. Hele , Yury V. Suleimanov

We consider a system of reaction-diffusion equations in a bounded interval of the real line, with emphasis on the metastable dynamics, whereby the time-dependent solution approaches the steady state in an asymptotically exponentially long…

偏微分方程分析 · 数学 2016-06-27 Marta Strani

The behavior of the average energy for an ensemble of non-interacting particles is studied using scaling arguments in a dissipative time-dependent stadium-like billiard. The dynamics of the system is described by a four dimensional…

混沌动力学 · 物理学 2011-11-24 André Luís Prando Livorati , Iberê Luiz Caldas , Edson Denis Leonel