244 citations · 2.2k across the 66 of their papers we have counts for
4 papers · 1 filter
Effect of propagator renormalization on the band gap of insulating solids
Sergei Iskakov, Alexander A. Rusakov, Dominika Zgid +1
We present momentum-resolved spectral functions and band gaps from bare and self-consistent second-order perturbation theory for insulating periodic solids. We establish that, for…
Self-energy embedding theory (SEET) for periodic systems
Alexander A. Rusakov, Sergei Iskakov, Lan Nguyen Tran +1
We present an implementation of the self-energy embedding theory (SEET) for periodic systems and provide a fully self-consistent embedding solution for a simple realistic periodic…
Spin-unrestricted self-energy embedding theory
Tran Nguyen Lan, Sergei Iskakov, Dominika Zgid
We present a new theoretical approach, unrestricted self-energy embedding theory (USEET) that is a Green's function embedding theory used to study problems in which an open, embedd…
Chebyshev polynomial representation of imaginary time response functions
Emanuel Gull, Sergei Iskakov, Igor Krivenko +2
Problems of finite-temperature quantum statistical mechanics can be formulated in terms of imaginary (Euclidean) -time Green's functions and self-energies. In the context of realis…