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Time-dependent density functional theory scheme for efficient calculations of dynamic (hyper)polarizabilities

AuthorsAndrade, Xavier; Botti, Silvana; Marques, Miguel A. L.; Rubio, Angel
Issue Date2007
PublisherAmerican Institute of Physics
CitationJournal of Chemical Physics 126(18): 184106 (2007)
AbstractThe authors present an efficient perturbative method to obtain both static and dynamic polarizabilities and hyperpolarizabilities of complex electronic systems. This approach is based on the solution of a frequency-dependent Sternheimer equation, within the formalism of time-dependent density functional theory, and allows the calculation of the response both in resonance and out of resonance. Furthermore, the excellent scaling with the number of atoms opens the way to the investigation of response properties of very large molecular systems. To demonstrate the capabilities of this method, they implemented it in a real-space (basis-set-free) code and applied it to benchmark molecules, namely, CO,H 2 O , and para-nitroaniline. Their results are in agreement with experimental and previous theoretical studies and fully validate their approach.
Publisher version (URL)http://dx.doi.org/10.1063/1.2733666
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