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Many‐body Perturbation Theory Combined With Time Dependent DFT: A New Method For The Calculation Of The Dielectric Function Of Solids

Rodolfo Del Sole, Olivia Pulci, V. Olevano, Andrea Marini
Published 2005 · Physics
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We show an approximate method to calculate the polarizability of a many-electron system within Green's function theory in a similar way as within time-dependent density functional theory (TDDFT). The basic idea is to join the computational simplicity of the latter with the accuracy of the former. We apply this approach to a prototype system, LiF. For comparison, we also show results obtained within other approximated TDDFT-based methods. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)



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