Using Monte Carlo simulations a lattice gas model with only repulsive interactions was checked for the presence of anomalies. We show that this system exhibits the density (temperature of maximum density—TMD) and diffusion anomalies as present in liquid water. These anomalous behaviors exist...

Correlation between the spatial heterogeneity and the collective motions of molecules is studied with molecular dynamics simulation of liquid water. Analyses based on the order parameter of structural fluctuations show that liquid water is a composite of high-density amorphous (HDA)-like regions...