TY - JOUR KW - paper AU - V. Garbuio AU - M. Cascella AU - Lucia Reining AU - Rodolfo Del Sole AU - Olivia Pulci AB - We present ab initio calculations of the excited state properties of liquid water in the framework of many-body Green\textquoterights function formalism. Snapshots taken from molecular dynamics simulations are used as input geometries to calculate electronic and optical spectra, and the results are averaged over the different configurations. The optical absorption spectra with the inclusion of excitonic effects are calculated by solving the Bethe-Salpeter equation. The insensitivity of screening effects to a particular configuration make these calculations feasible. The resulting spectra, which are strongly modified by many-body effects, are in good agreement with experiments. BT - Phys. Rev. Lett. CY - ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA DA - SEP 29 DO - 10.1103/PhysRevLett.97.137402 M1 - 13 N2 - We present ab initio calculations of the excited state properties of liquid water in the framework of many-body Green\textquoterights function formalism. Snapshots taken from molecular dynamics simulations are used as input geometries to calculate electronic and optical spectra, and the results are averaged over the different configurations. The optical absorption spectra with the inclusion of excitonic effects are calculated by solving the Bethe-Salpeter equation. The insensitivity of screening effects to a particular configuration make these calculations feasible. The resulting spectra, which are strongly modified by many-body effects, are in good agreement with experiments. PB - AMERICAN PHYSICAL SOC PP - ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA PY - 2006 T2 - Phys. Rev. Lett. TI - Ab initio calculation of optical spectra of liquids: Many-body effects in the electronic excitations of water UR - http://dx.doi.org/10.1103/PhysRevLett.97.137402 VL - 97 ER -