Dynamic polarizability, Cauchy moments, and the optical absorption spectrum of liquid water: a sequential molecular
Ricardo A Mata1, Benedito J Costa Cabral, Claude Millot
1Grupo de Fisica Matematica, Universidade de Lisboa, Av. Professor Gama Pinto 2, 1649-003 Lisboa, Portugal.
Abstract:
The dynamic polarizability and optical absorption spectrum of liquid water in the 6-15 eV energy range are investigated by a sequential molecular dynamics (MD)/quantum mechanical approach. The MD simulations are based on a polarizable model for liquid water. Calculation of electronic properties relies on time-dependent density functional and equation-of-motion coupled-cluster theories. Results for the dynamic polarizability, Cauchy moments, S(-2), S(-4), S(-6), and dielectric properties of liquid water are reported. The theoretical predictions for the optical absorption spectrum of liquid water are in good agreement with experimental information.
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