Attractive versus truncated repulsive supercooled liquids: The dynamics is encoded in the pair correlation function
François P. Landes, Giulio Biroli, Olivier Dauchot, Andrea J. Liu, David R. Reichman
Abstract
We compare glassy dynamics in two liquids that differ in the form of their interaction potentials. Both systems have the same repulsive interactions but one has also an attractive part in the potential. These two systems exhibit very different dynamics despite having nearly identical pair correlation functions. We demonstrate that a properly weighted integral of the pair correlation function, which amplifies the subtle differences between the two systems, correctly captures their dynamical differences. The weights are obtained from a standard machine learning algorithm.
Topics & Concepts
SupercoolingStatistical physicsCorrelation function (quantum field theory)Function (biology)Dynamics (music)Radial distribution functionCorrelationPair potentialPhysicsMolecular dynamicsMathematicsThermodynamicsQuantum mechanicsBiologyDielectricAcousticsEvolutionary biologyGeometryMaterial Dynamics and PropertiesTheoretical and Computational PhysicsPhase Equilibria and Thermodynamics