Supercooled water and the kinetic glass transition

F. Sciortino, P. Gallo, P. Tartaglia, S. -H. Chen
1996 Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics  
We present a molecular-dynamics study of the self-dynamics of water molecules in deeply supercooled liquid states. We find that the decay of single-particle dynamics correlation functions is characterized by a fast initial relaxation toward a plateau and by a region of self-similar dynamics, followed at late times by a stretched exponential decay. We interpret such results in the framework of the mode-coupling theory for supercooled liquids. We relate the apparent anomalies of the transport
more » ... ficients in water on lowering the temperature to the formation of cages and to the associated slow dynamics resulting from the presence of long-lived molecular cages. The so-called critical Angell temperature in supercooled water could thus be interpreted as kinetic glass transition temperature, relaxing the need of a thermodynamic singularity for the explanation of the anomalies of liquid water.
doi:10.1103/physreve.54.6331 pmid:9965854 fatcat:h4sparllvneyfmuz4fmj3vbz7e