Abstract
The ground state energy, and static and dynamic correlation functions are investigated in the inhomogeneous Hartree-Fock (HF) plus random phase approximation (RPA) approach applied to a one-dimensional spinless fermion model showing self-trapped doping states at the mean field level. Results are compared with homogeneous HF and exact diagonalization. RPA fluctuations added to the generally inhomogeneous HF ground state allows the computation of dynamical correlation functions that compare well with exact diagonalization results. The RPA correction to the ground state energy agrees well with the exact results at strong and weak coupling limits. We also compare it with a related quasi-boson approach. The instability towards self-trapped behaviour is signaled by a RPA mode with frequency approaching zero. (author). 21 refs, 10 figs.
Lorenzana, J;
[1]
Grynberg, M D;
Yu, L;
[2]
Yonemitsu, K;
Bishop, A R
[3]
- International School of Advanced Studies, Trieste (Italy)
- International Centre for Theoretical Physics, Trieste (Italy)
- Los Alamos National Lab, Los Alamos, NM (United States). Theoretical Div.
Citation Formats
Lorenzana, J, Grynberg, M D, Yu, L, Yonemitsu, K, and Bishop, A R.
Dynamic and static correlation functions in the inhomogeneous Hartree-Fock-state approach with random-phase-approximation fluctuations.
IAEA: N. p.,
1992.
Web.
Lorenzana, J, Grynberg, M D, Yu, L, Yonemitsu, K, & Bishop, A R.
Dynamic and static correlation functions in the inhomogeneous Hartree-Fock-state approach with random-phase-approximation fluctuations.
IAEA.
Lorenzana, J, Grynberg, M D, Yu, L, Yonemitsu, K, and Bishop, A R.
1992.
"Dynamic and static correlation functions in the inhomogeneous Hartree-Fock-state approach with random-phase-approximation fluctuations."
IAEA.
@misc{etde_10126432,
title = {Dynamic and static correlation functions in the inhomogeneous Hartree-Fock-state approach with random-phase-approximation fluctuations}
author = {Lorenzana, J, Grynberg, M D, Yu, L, Yonemitsu, K, and Bishop, A R}
abstractNote = {The ground state energy, and static and dynamic correlation functions are investigated in the inhomogeneous Hartree-Fock (HF) plus random phase approximation (RPA) approach applied to a one-dimensional spinless fermion model showing self-trapped doping states at the mean field level. Results are compared with homogeneous HF and exact diagonalization. RPA fluctuations added to the generally inhomogeneous HF ground state allows the computation of dynamical correlation functions that compare well with exact diagonalization results. The RPA correction to the ground state energy agrees well with the exact results at strong and weak coupling limits. We also compare it with a related quasi-boson approach. The instability towards self-trapped behaviour is signaled by a RPA mode with frequency approaching zero. (author). 21 refs, 10 figs.}
place = {IAEA}
year = {1992}
month = {Nov}
}
title = {Dynamic and static correlation functions in the inhomogeneous Hartree-Fock-state approach with random-phase-approximation fluctuations}
author = {Lorenzana, J, Grynberg, M D, Yu, L, Yonemitsu, K, and Bishop, A R}
abstractNote = {The ground state energy, and static and dynamic correlation functions are investigated in the inhomogeneous Hartree-Fock (HF) plus random phase approximation (RPA) approach applied to a one-dimensional spinless fermion model showing self-trapped doping states at the mean field level. Results are compared with homogeneous HF and exact diagonalization. RPA fluctuations added to the generally inhomogeneous HF ground state allows the computation of dynamical correlation functions that compare well with exact diagonalization results. The RPA correction to the ground state energy agrees well with the exact results at strong and weak coupling limits. We also compare it with a related quasi-boson approach. The instability towards self-trapped behaviour is signaled by a RPA mode with frequency approaching zero. (author). 21 refs, 10 figs.}
place = {IAEA}
year = {1992}
month = {Nov}
}