Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/13290
 Title: Predictions of dynamic behavior under pressure for two scenarios to explain water anomalies Author: Kumar, PradeepFranzese, GiancarloStanley, H. Eugene (Harry Eugene), 1941- Keywords: Transformacions de fase (Física estadística)Física estadísticaPhase transformations (Statistical physics)Statistical physics Issue Date: 2008 Publisher: American Physical Society Abstract: Using Monte Carlo simulations and mean field calculations for a cell model of water we find a dynamic crossover in the orientational correlation time $\tau$ from non-Arrhenius behavior at high temperatures to Arrhenius behavior at low temperatures. This dynamic crossover is independent of whether water at very low temperature is charaterized by a liquid-liquid critical point'' or by the singularity free'' scenario. We relate $\tau$ to fluctuations of hydrogen bond network and show that the crossover found for $\tau$ for both scenarios is a consequence of the sharp change in the average number of hydrogen bonds at the temperature of the specific heat maximum. We find that the effect of pressure on the dynamics is strikingly different in the two scenarios, offering a means to distinguish between them. Note: Reproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.100.105701 It is part of: Physical Review Letters, 2008, vol. 100, núm. 10, p. 105701-1-105701-4 Related resource: http://doi.org/10.1103/PhysRevLett.100.105701 URI: http://hdl.handle.net/2445/13290 ISSN: 0031-9007 Appears in Collections: Articles publicats en revistes (Física de la Matèria Condensada)

Files in This Item:
File Description SizeFormat