1.8k citations · 5.4k across the 44 of their papers we have counts for
4 papers · 1 filter
A Green's function method for the two-dimensional frustrated spin-1/2 Heisenberg magnetic lattice
Zhen Zhao, Claudio Verdozzi, Ferdi Aryasetiawan
The magnon Hedin's equations are derived via the Schwinger functional derivative technique, and the resulting self-consistent Green's function method is used to calculate ground st…
Self-screening corrections beyond the random-phase approximation: Applications to band gaps of semiconductors
Viktor Christiansson, Ferdi Aryasetiawan
The self-screening error in the random-phase approximation (RPA) and the approximation (GWA) is a well-known issue and has received attention in recent years with several meth…
Spectral functions of the half-filled 1D Hubbard chain within the exchange-correlation potential formalism
F. Aryasetiawan, T. Sjöstrand
The spectral functions of the one-band half-filled 1D Hubbard chain are calculated using the exchange-correlation potential formalism developed recently. The exchange-correlation p…
Time-dependent exchange-correlation potential in lieu of self-energy
Ferdi Aryasetiawan
It is shown that the equation of motion of the one-particle Green function of an interacting many-electron system is governed by a multiplicative time-dependent exchange-correlatio…