Aging as dynamics in configuration space
arXiv:cond-mat/9905090 · doi:10.1209/epl/i2000-00191-8
Abstract
The relaxation dynamics of many disordered systems, such as structural glasses, proteins, granular materials or spin glasses, is not completely frozen even at very low temperatures. This residual motion leads to a change of the properties of the material, a process commonly called aging. Despite recent advances in the theoretical description of such aging processes, the microscopic mechanisms leading to the aging dynamics are still a matter of dispute. In this Letter we investigate the aging dynamics of a simple glass former by means of molecular dynamics computer simulation. Using the concept of the inherent structure we give evidence that aging dynamics can be understood as a decrease of the effective configurational temperature T of the system. From our results we conclude that the equilibration process is faster when the system is quenched to T_c, the critical T of mode-coupling theory, and that thermodynamic concepts are useful to describe the out-of-equilibrium aging process.
Latex 4 figures
References in corpus (1)
Cited by in corpus (70)
- Glassy dynamics of kinetically constrained models
- The Physics of the Colloidal Glass Transition
- Violation of the fluctuation-dissipation theorem in glassy systems: basic notions and the numerical evidence
- Modeling the mechanics of amorphous solids at different length and time scales
- The effective temperature
- Saddle Points and Dynamics of Lennard-Jones Clusters, Solids and Supercooled Liquids
- Energy landscape of a Lennard-Jones liquid: Statistics of stationary points
- Edwards measures for powders and glasses
- A Landscape Analysis of Constraint Satisfaction Problems
- The thermodynamical liquid-glass transition in a Lennard-Jones binary mixture
- Extension of the Fluctuation-Dissipation theorem to the physical aging of a model glass-forming liquid
- Activated dynamics and effective temperature in a steady state sheared glass
- Edwards' measures: a thermodynamic construction for dense granular media and glasses
- Dynamics and Configurational Entropy in the LW Model for Supercooled Orthoterphenyl
- Fluctuation-dissipation relation in a sheared fluid
- Active glasses
- Thermodynamic and structural aspects of the potential energy surface of simulated water
- Two-temperature continuum thermomechanics of deforming amorphous solids
- Dynamic particle tracking reveals the aging temperature of a colloidal glass
- Role of the unstable directions in the equilibrium and aging dynamics of supercooled liquids
- Thermodynamics of supercooled liquids in the inherent structure formalism: a case study
- Quasi-saddles as relevant points of the potential energy surface in the dynamics of supercooled liquids
- Energy landscapes, ideal glasses, and their equation of state
- Glassy systems under time-dependent driving forces: application to slow granular rheology
- Aging and rejuvenation of active matter under topological constraints
- Configuration space connectivity across the fragile to strong transition in silica
- Structural Order in Glassy Water
- A Potential Energy Landscape Study of the Amorphous-Amorphous Transformation in HO
- Potential energy landscape of finite-size mean-field models for glasses
- Brownian Dynamics simulations of aging colloidal gels
- Topological Description of the Aging Dynamics in Simple Glasses
- Plastic Flow in Two-Dimensional Solids
- On the origine of the Boson peak
- Activated processes and Inherent Structure dynamics of finite-size mean-field models for glasses
- Thermodynamics and statistical mechanics of frozen systems in inherent states
- Memory in an aging molecular glass
- Aging in a simple glassformer
- Shear-induced overaging in a polymer glass
- Complex dynamics and configurational entropy of spatial optical solitons in nonlocal media
- Glass Polymorphism in TIP4P/2005 Water: A Description Based on the Potential Energy Landscape Formalism
- Cooling rate, heating rate and aging effects in glassy water
- Dynamics of dilute disordered models: a solvable case
- On the definition of temperature in dense granular media
- Equilibration times in numerical simulation of structural glasses: Comparing parallel tempering and conventional molecular dynamics
- Aging in Dense Colloids as Diffusion in the Logarithm of Time
- Aging to Equilibrium Dynamics of SiO2
- Formulation of thermodynamics for the glassy state: configurational energy as a modest source of energy
- Genome heterogeneity drives the evolution of species
- Equivalence of fluctuation-dissipation and Edwards' temperature in cyclically sheared granular systems
- Sheared Solid Materials
- Computer simulations of the glass transition and glassy materials
- Inherent Structures, Configurational Entropy and Slow Glassy Dynamics
- Mesoscopic fluctuations and intermittency in aging dynamics
- Effective temperatures in an exactly solvable model for a fragile glass
- Low-temperature dynamics of spin glasses: Walking in the energy landscape
- Understanding the Nonlinear Dynamics of Driven Particles in Supercooled Liquids in Terms of an Effective Temperature
- Inherent Structures in models for fragile and strong glass
- Is the Stillinger and Weber decomposition relevant for coarsening models?
- Equilibrium and out of equilibrium thermodynamics in supercooled liquids and glasses
- Temporal and spatial heterogeneity in aging colloids: a mesoscopic model
- Molecular dynamics simulation study of the high frequency sound waves in the fragile glass former ortho-terphenyl
- Fluctuation-dissipation relations and energy landscape in an out-of-equilibrium strong glass-forming liquid
- Exactly Solvable Model Glass with a Facilitated Dynamics
- Spectral statistics of the quenched normal modes of a network-forming molecular liquid
- Stationary Probability Distribution in Granular Media
- Universality in the vibrational spectra of weakly-disordered two-dimensional clusters
- Off-equilibrium dynamics in the energy landscape of a simple model glass
- Slow nonequilibrium dynamics: parallels between classical and quantum glasses and gently driven systems
- Extremal noise events, intermittency and Log-Poisson statistics in non-equilibrium aging of complex systems
- On the Energy Minima of the SK Model