Description of the Condensed Phases of Water in Terms of Quantum Condensates

It is shown that the "abnormal" properties of ice and liquid water can be explained in a hybrid quantum/classical framework based on objective facts. The internal decoherence due to the low dissociation energy of the H-bond and the strong electric dipole moment lead to a quantum condensate of O atoms dressed with classical oscillators and a degenerate electric field. The classical oscillators are either normal modes subject to equipartition in the liquid or enslaved to the massless field interference with zero kinetic energy in the ice. The heat capacities, the temperatures and latent heats of the quantum phase transitions, the superinsulator state of the ice, the transition between high and low density liquids by supercooling, the temperature of the maximum density of the liquid are all explained by a set of four observables and the degeneracy entropy. The condensate also describes the aerosol of water droplets. In conclusion, quantum condensates turn out to be an essential part of our everyday environment.