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arXiv · 1810.03322

CHEERS: A tool for Correlated Hole-Electron Evolution from Real-time Simulations

E. Perfetto·G. Stefanucci
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Abstract

We put forward a practical nonequilibrium Green's function (NEGF) scheme to perform real-time evolutions of many-body interacting systems driven out of equilibrium by external fields. CHEERS is a computational tool to solve the NEGF equation of motion in the so called generalized Kadanoff-Baym ansatz and it can be used for model systems as well as first-principles Hamiltonians. Dynamical correlation (or memory) effects are added to the Hartree-Fock dynamics through a many-body self-energy. Applications to time-dependent quantum transport, time-resolved photoabsorption and other ultrafast phenomena are discussed.

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E. Perfetto, G. Stefanucci. 2018-10-08. CHEERS: A tool for Correlated Hole-Electron Evolution from Real-time Simulations. https://doi.org/10.1088/1361-648x/aae675

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