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arXiv · 1708.02450

Dynamical local connector approximation for electron addition and removal spectra

Marco Vanzini·Lucia Reining·Matteo Gatti
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Abstract

Realistic calculations of electron addition and removal spectra rely most often on Green's functions and complex, non-local self-energies. We introduce a shortcut to obtain the spectral function directly from a local and frequency-dependent, yet real, potential. We calculate this potential in the homogeneous electron gas (HEG), and we design a connector which prescribes the use of the HEG results to calculate spectral functions of real materials. Benchmark results for several solids demonstrate the potential of our approach.

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Marco Vanzini, Lucia Reining, Matteo Gatti. 2017-08-08. Dynamical local connector approximation for electron addition and removal spectra. https://arxiv.org/abs/1708.02450

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