Random-phase-approximation approach to collective modes around inhomogeneous Hartree-Fock states: One-dimensional doped Hubbard model

1991 ◽  
Vol 44 (6) ◽  
pp. 2652-2663 ◽  
Author(s):  
K. Yonemitsu ◽  
I. Batistić ◽  
A. R. Bishop
Keyword(s):  
Hubbard Model ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Collective Modes ◽  
Phase Approximation ◽  
Approximation Approach ◽  
One Dimensional ◽  
Fock States ◽  
Hartree Fock

Random phase approximation in a deformed Hartree-Fock basis

1984 ◽  
Vol 29 (3) ◽  
pp. 1113-1115 ◽  
Author(s):  
M. Z. I. Gering ◽  
W. D. Heiss
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Hartree Fock

Phase diagram of charged dumbbells: A random phase approximation approach

2004 ◽  
Vol 70 (2) ◽  
Author(s):  
Alexander Kudlay ◽  
Alexander V. Ermoshkin ◽  
Monica Olvera de la Cruz
Keyword(s):  
Phase Diagram ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Approximation Approach

TENSOR EFFECTS IN PYGMY DIPOLE EXCITATION

2011 ◽  
Vol 20 (10) ◽  
pp. 2143-2151 ◽  
Author(s):  
ESRA YUKSEL ◽  
KUTSAL BOZKURT
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Nucleon Nucleon ◽  
Coupling Constants ◽  
Phase Approximation ◽  
Skyrme Interaction ◽  
Quasiparticle Random Phase Approximation ◽  
Tensor Coupling ◽  
Hartree Fock ◽  
Dipole Excitation

We investigate tensor effects in pygmy dipole excitations for the case of neutron-rich nuclei 68 Ni and 124 Sn using effective nucleon–nucleon Skyrme interaction. We use the Hartree–Fock–Bogoliubov (HFB) theory and employ the quasiparticle random phase approximation (QRPA). We calculate and compare the PDR and also GDR strength in the PDR–GDR energy region for QRPA calculations with and without tensor correlations. The most obvious results for the dipole excitations calculations are strongly dependent on the tensor terms. We see that the tensor correlations are more active at around 14–20 MeV , especially for the neutron-rich nuclei 68 Ni . We also compare the PDR calculations with their experimental results for the different proton–neutron tensor coupling constants.

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