Phase Diagram for Supercooled Water.

Abstract

Molecular dynamics simulations have been carried out at constant pressure and temperature to examine phase behaviors of supercooled water. The anomalies of supercooled water in thermodynamic response functions at atmospheric pressure, the phase transition between low and high density liquids and a fragile-strong transition are accounted for by reconciling an idea introducing a second critical point separating two liquid states with a conjecture that low temperature state is a different phase from normal water.