Convergence rates for nonequilibrium Langevin dynamics

A Iacobucci, S Olla, G Stoltz - Annales mathématiques du Québec, 2019 - Springer
We study the exponential convergence to the stationary state for nonequilibrium Langevin
dynamics, by a perturbative approach based on hypocoercive techniques developed for …

Diffusion in a biased washboard potential revisited

J Spiechowicz, J Łuczka - Physical Review E, 2020 - APS
The celebrated Sutherland-Einstein relation for systems at thermal equilibrium states that
spread of trajectories of Brownian particles is an increasing function of temperature. Here …

Spectral methods for Langevin dynamics and associated error estimates

J Roussel, G Stoltz - ESAIM: Mathematical Modelling and …, 2018 - esaim-m2an.org
We prove the consistency of Galerkin methods to solve Poisson equations where the
differential operator under consideration is hypocoercive. We show in particular how the …

Arcsine law and multistable Brownian dynamics in a tilted periodic potential

J Spiechowicz, J Łuczka - Physical Review E, 2021 - APS
Multistability is one of the most important phenomena in dynamical systems, eg, bistability
enables the implementation of logic gates and therefore computation. Recently multistability …

Spectral methods for multiscale stochastic differential equations

A Abdulle, GA Pavliotis, U Vaes - SIAM/ASA Journal on Uncertainty …, 2017 - SIAM
This paper presents a new method for the solution of multiscale stochastic differential
equations at the diffusive time scale. In contrast to averaging-based methods, eg, the …

Conundrum of weak-noise limit for diffusion in a tilted periodic potential

J Spiechowicz, J Łuczka - Physical Review E, 2021 - APS
The weak-noise limit of dissipative dynamical systems is often the most fascinating one. In
such a case fluctuations can interact with a rich complexity, frequently hidden in …

Error analysis of modified Langevin dynamics

S Redon, G Stoltz, Z Trstanova - Journal of Statistical Physics, 2016 - Springer
We consider Langevin dynamics associated with a modified kinetic energy vanishing for
small momenta. This allows us to freeze slow particles, and hence avoid the re-computation …

[HTML][HTML] Atomic insights into the sintering behaviour of Ag–Cu solid solution nanoparticles on Ag substrate

Z Wen, W Liu, C Hang, R An, Y Tian - Journal of Materials Research and …, 2024 - Elsevier
In electronic packaging industry, it has been reported that compared with nano silver and
nano copper, the complementation and coordination of Ag and Cu components enable …

Velocity multistability vs. ergodicity breaking in a biased periodic potential

J Spiechowicz, P Hänggi, J Łuczka - Entropy, 2022 - mdpi.com
Multistability, ie, the coexistence of several attractors for a given set of system parameters, is
one of the most important phenomena occurring in dynamical systems. We consider it in the …

Numerical computations of geometric ergodicity for stochastic dynamics

Y Li, S Wang - Nonlinearity, 2020 - iopscience.iop.org
A probabilistic approach to compute the geometric convergence rate of a stochastic process
is introduced in this paper. The goal is to quantitatively compute both the upper and lower …