Fast and Slow Dynamics of Hydrogen Bonds in Liquid Water
نویسندگان
چکیده
We study hydrogen-bond dynamics in liquid water at low temperatures using molecular dynamics simulations. We find that bond lifetime (“fast dynamics”) has Arrhenius temperature dependence. We also calculate the bond correlation function and find that the correlation time (“slow dynamics”) shows power-law behavior. This power-law behavior, as well as the decay of the bond correlations, is consistent with the predictions of the mode-coupling theory. The correlation time at the lowest temperature studied shows deviation from power-law behavior that suggests continuity of dynamic functions between the liquid and glassy states of water at low pressure. Typeset using REVTEX
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