Computer simulations of glasses: the potential energy landscape

Z Raza, B Alling, IA Abrikosov - Journal of Physics: Condensed …, 2015 - iopscience.iop.org
We review the current state of research on glasses, discussing the theoretical background
and computational models employed to describe them. This article focuses on the use of the …

The parallel replica dynamics method–Coming of age

D Perez, BP Uberuaga, AF Voter - Computational Materials Science, 2015 - Elsevier
Molecular dynamics (MD)–the numerical integration of atomistic equations of motion–is a
workhorse of computational materials science. Indeed, MD can in principle be used to obtain …

Mathematical analysis of temperature accelerated dynamics

D Aristoff, T Lelievre - Multiscale Modeling & Simulation, 2014 - SIAM
We give a mathematical framework for temperature accelerated dynamics (TAD), an
algorithm proposed by Sø rensen and Voter in [J. Chem. Phys., 112 (2000), pp. 9599--9606] …

Structural transitions in glassy atactic polystyrene using transition-state theory

GG Vogiatzis, LCA van Breemen… - The Journal of Physical …, 2021 - ACS Publications
Transition pathways on the energy landscape of atactic polystyrene (aPS) glassy specimens
are probed below its glass-transition temperature. Each of these transitions is considered an …

Lumping analysis for the prediction of long-time dynamics: From monomolecular reaction systems to inherent structure dynamics of glassy materials

N Lempesis, DG Tsalikis, GC Boulougouris… - The Journal of …, 2011 - pubs.aip.org
In this work we develop, test, and implement a methodology that is able to perform, in an
automated manner,“lumping” of a high-dimensional, discrete dynamical system onto a lower …

Temporal disconnectivity of the energy landscape in glassy systems

N Lempesis, GC Boulougouris… - The Journal of Chemical …, 2013 - pubs.aip.org
An alternative graphical representation of the potential energy landscape (PEL) has been
developed and applied to a binary Lennard-Jones glassy system, providing insight into the …

Tracking the dynamics of systems evolving through infrequent transitions in a network of discrete states

DN Theodorou, N Lempesis… - … Methods for Dynamics …, 2012 - books.google.com
Many physicochemical, materials, and biological systems whose dynamics is too slow to be
addressed via conventional molecular dynamics (MD) simulations can be considered as …

Accelerated Molecular Dynamics Methods for Long-Time Simulations in Materials

BP Uberuaga, D Perez, AF Voter - … : From Bold Initiatives to the Last Mile …, 2021 - Springer
Many important processes in materials and chemical systems are intrinsically atomistic in
nature but involve timescales that span many orders of magnitude, thus exceeding what can …

On the geometrical representation of classical statistical mechanics

GC Boulougouris - Journal of Statistical Mechanics: Theory and …, 2021 - iopscience.iop.org
In this work, a geometrical representation of equilibrium and near equilibrium classical
statistical mechanics is proposed. Within this formalism the equilibrium thermodynamic …

Atomistic simulation methods for long-time dynamics in materials for nuclear energy systems

BP Uberuaga, D Perez, AF Voter - 2018 - osti.gov
Many important processes in materials systems are intrinsically atomistic in nature but
involve time scales that span many orders of magnitude, thus exceeding what can be …