Capturing many-body correlation effects with quantum and classical computing
Karol Kowalski, Nicholas P. Bauman, Guang Hao Low, Martin Roetteler, John J. Rehr, Fernando D. Vila · Physical Review A · 2024
The authors demonstrate the efficacy of the quantum phase estimator algorithm for evaluating the spectral function related to the ionization-potential part of a one-electron Green's function in the high-energy regime. They assess the algorithm's accuracy by comparing it to results derived from both exact and approximate formulations that incorporate high-rank correlation effects.