Particle dynamics in fluids with random interactions
arXiv:1508.05264 · doi:10.1063/1.4949546
Abstract
We study the dynamics of particles in a multi-component 2d Lennard-Jones (LJ) fluid in the limiting case where {\it all the particles are different} (APD). The equilibrium properties of this APD system were studied in our earlier work [J.~Chem.~Phys.~142, 051104]. We use molecular dynamics simulations to investigate the statistical properties of particle trajectories in a temperature range covering both normal and supercooled fluid states. We calculate the mean-square displacement as well as angle, displacement and waiting time distributions, and compare the results with those for one-component LJ fluid. As temperature is lowered, the dynamics of the APD system becomes increasingly complex, as the intrinsic difference between the particles is amplified by neighborhood identity ordering and by the heterogeneous structure of the supercooled state.
References in corpus (9)
- Universal nature of particle displacements close to glass and jamming transitions
- Weak ergodicity breaking of receptor motion in living cells stemming from random diffusivity
- Development of anomalous diffusion among crowding proteins
- Structural and dynamical heterogeneity in a glass forming liquid
- Accurate simulation estimates of cloud points of polydisperse fluids
- Particle dynamics in fluids with random interactions
- Pair interaction ordering in fluids with random interactions
- Phase behaviour and particle-size cutoff effects in polydisperse fluids
- A polydisperse lattice-gas model
Cited by in corpus (10)
- Protein motion in the nucleus: from anomalous diffusion to weak interactions
- Tracer diffusion in a sea of polymers with binding zones: mobile vs frozen traps
- Particle dynamics in fluids with random interactions
- Effect of Energy Polydispersity on the Nature of Lennard-Jones Liquids
- Local random configuration-tree theory for string repetition and facilitated dynamics of glass
- Effect of liquid state organization on microstructure and strength of model multicomponent solids
- Even strong energy polydispersity does not affect the average structure and dynamics of simple liquids
- view on energy polydisperse Lennard-Jones systems
- Identity Ordering and Metastable Clusters in Fluids with Random Interactions
- Systems with size and energy polydispersity: from glasses to mosaic crystals