184 citations · 934 across the 51 of their papers we have counts for
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Wannier interpolation of one-particle Green's functions from coupled-cluster singles and doubles (CCSD)
Taichi Kosugi, Yu-ichiro Matsushita
We propose two schemes for interpolation of the one-particle Green's function (GF) calculated within coupled-cluster singles and doubles (CCSD) method for a periodic system. They u…
One-particle Green's function of interacting two electrons using analytic solutions for a three-body problem: comparison with exact Kohn--Sham system
Taichi Kosugi, Yu-ichiro Matsushita
For a three-electron system with finite-strength interactions confined to a one-dimensional harmonic trap, we solve the Schroedinger equation analytically to obtain the exact solut…
Band structures in coupled-cluster singles-and-doubles Green's function (GFCCSD)
Yoritaka Furukawa, Taichi Kosugi, Hirofumi Nishi +1
We demonstrate that coupled-cluster singles-and-doubles Green's function (GFCCSD) method is a powerful and prominent tool drawing the electronic band structures and the total energ…
Comparison of Green's functions for transition metal atoms using self-energy functional theory and coupled-cluster singles and doubles (CCSD)
Taichi Kosugi, Hirofumi Nishi, Yoritaka Furukawa +1
We demonstrate in the present study that self-consistent calculations based on the self-energy functional theory (SFT) are possible for the electronic structure of realistic system…
Quasiparticle energy spectra of isolated atoms from coupled-cluster singles and doubles (CCSD): Comparison with exact CI calculations
Hirofumi Nishi, Taichi Kosugi, Yoritaka Furukawa +1
In this study, we have calculated single-electron energy spectra via the Green's function based on the coupled-cluster singles and doubles (GFCCSD) method for isolated atoms from H…