Exact Exchange Kernel For Time‐dependent Density‐functional Theory

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1 2 arXiv:2105.11451v1 [cond-mat.mtrl-sci] 24 May 2021

May 25, 2021 In the framework of time-dependent density-functional theory (TDDFT), the exact exchange-correlation (xc) kernel f xc(n,q,ω) determines not only the ground-state energy but also the excited-state energies, lifetimes, and time-dependent linear density response of an arbitrary many-electron system.