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Updated: Oct 13, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Role of unstable directions in the equilibrium and aging dynamics of supercooled liquids
1Dipartimento di Fisica, Universita' di Roma "La Sapienza", Istituto Nazionale per la Fisica della Materia, Piazzale Aldo Moro 2, I-00185, Roma, Italy.
Abstract:
The connectivity of the potential energy landscape in supercooled atomic liquids is investigated through a calculation of the instantaneous normal modes spectrum and a detailed analysis of the unstable directions in configuration space. We confirm the hypothesis that the mode-coupling critical temperature is the T at which the dynamics crosses over from free to activated exploration of configuration space. We also observe changes in the local connectivity of configuration space sampled during aging, following a temperature jump from a liquid to a glassy state.
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