Ergodicity and large deviations in physical systems with stochastic dynamics

RL Jack - The European Physical Journal B, 2020 - Springer
In ergodic physical systems, time-averaged quantities converge (for large times) to their
ensemble-averaged values. Large deviation theory describes rare events where these time …

Optimal sampling of dynamical large deviations via matrix product states

L Causer, MC Banuls, JP Garrahan - Physical Review E, 2021 - APS
The large deviation statistics of dynamical observables is encoded in the spectral properties
of deformed Markov generators. Recent works have shown that tensor network methods are …

[HTML][HTML] Variational control forces for enhanced sampling of nonequilibrium molecular dynamics simulations

A Das, DT Limmer - The Journal of chemical physics, 2019 - pubs.aip.org
We introduce a variational algorithm to estimate the likelihood of a rare event within a
nonequilibrium molecular dynamics simulation through the evaluation of an optimal control …

Coupling rare event algorithms with data-based learned committor functions using the analogue Markov chain

D Lucente, J Rolland, C Herbert… - Journal of Statistical …, 2022 - iopscience.iop.org
Rare events play a crucial role in many physics, chemistry, and biology phenomena, when
they change the structure of the system, for instance in the case of multistability, or when …

[HTML][HTML] Nearly reducible finite Markov chains: Theory and algorithms

DJ Sharpe, DJ Wales - The Journal of Chemical Physics, 2021 - pubs.aip.org
Finite Markov chains, memoryless random walks on complex networks, appear commonly
as models for stochastic dynamics in condensed matter physics, biophysics, ecology …

Building continuous time crystals from rare events

R Hurtado-Gutiérrez, F Carollo, C Pérez-Espigares… - Physical Review Letters, 2020 - APS
Symmetry-breaking dynamical phase transitions (DPTs) abound in the fluctuations of
nonequilibrium systems. Here, we show that the spectral features of a particular class of …

[HTML][HTML] Rare event sampling methods

F Bouchet, J Rolland, J Wouters - Chaos: An interdisciplinary journal of …, 2019 - pubs.aip.org
With continuously increasing available computer power, complex numerical models have
become indispensable tools in various branches of science. However, if we consider very …

The continuum between temperament and mental illness as dynamical phases and transitions

W Sulis - Frontiers in Psychiatry, 2021 - frontiersin.org
The full range of biopsychosocial complexity is mind-boggling, spanning a vast range of
spatiotemporal scales with complicated vertical, horizontal, and diagonal feedback …

Exact distributions of currents and frenesy for Markov bridges

É Roldán, P Vivo - Physical Review E, 2019 - APS
We consider discrete-time Markov bridges, chains whose initial and final states coincide. We
derive exact finite-time formulae for the joint probability distributions of additive functionals of …

Finding the effective dynamics to make rare events typical in chaotic maps

R Gutiérrez, A Canella-Ortiz, C Pérez-Espigares - Physical Review Letters, 2023 - APS
Dynamical fluctuations or rare events associated with atypical trajectories in chaotic maps
due to specific initial conditions can crucially determine their fate, as the may lead to stability …