Note: Equation of state and compressibility of supercooled water: simulations and experiment

The equation of state and the isothermal compressibility of supercooled water for pressures up to 3000 bar obtained from computer simulations of the TIP4P/2005 model are compared to recent experimental results. The agreement between the simulations and experimental results is quite good. This reinforces the idea that the Widom line and the liquid-liquid phase separation found in the simulations should also exist in real water.