29 citations · 189 across the 28 of their papers we have counts for
3 papers · 1 filter
Full Self-Consistent Projection Operator Approach to Nonlocal Excitations in Solids
Yoshiro Kakehashi, Tetsuro Nakamura, Peter Fulde
A self-consistent projection operator method for single-particle excitations is developed. It describes the nonlocal correlations on the basis of a projection technique to the reta…
Non local theory of excitations applied to the Hubbard model
Y. Kakehashi, T. Nakamura, P. Fulde
We propose a nonlocal theory of single-particle excitations. It is based on an off-diagonal effective medium and the projection operator method for treating the retarded Green func…
Evidence of Strong Electron Correlations in Gamma-Iron
Y. Kakehashi, M. Atiqur R. Patoary, T. Tamashiro
Single-particle excitation spectra of gamma-Fe in the paramagnetic state have been investigated by means of the first-principles dynamical coherent potential approximation theory w…