scholarly journals Electric dipole strength and dipole polarizability in 48Ca within a fully self-consistent second random–phase approximation

2018 ◽  
Vol 777 ◽  
pp. 163-168 ◽  
Author(s):  
D. Gambacurta ◽  
M. Grasso ◽  
O. Vasseur
Keyword(s):  
Electric Dipole ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Dipole Polarizability ◽  
Phase Approximation ◽  
Dipole Strength ◽  
Self Consistent

Hybrid random-phase-approximation–cluster model for the dipole strength function ofLi11

1991 ◽  
Vol 43 (5) ◽  
pp. R2049-R2051 ◽  
Author(s):  
N. Teruya ◽  
C. A. Bertulani ◽  
S. Krewald ◽  
H. Dias ◽  
M. S. Hussein
Keyword(s):  
Cluster Model ◽  
Random Phase Approximation ◽  
Strength Function ◽  
Random Phase ◽  
Phase Approximation ◽  
Dipole Strength

THE NUMBER SELF-CONSISTENT RENORMALIZED RANDOM PHASE APPROXIMATION

2006 ◽  
Vol 20 (30n31) ◽  
pp. 5334-5337
Author(s):  
A. MARIANO
Keyword(s):  
Charge Exchange ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Critical Value ◽  
Phase Approximation ◽  
Heavy Nuclei ◽  
Electromagnetic Transitions ◽  
Self Consistent ◽  
Eigen Values ◽  
Beta Decays

RPA and its quasiparticle generalization (QRPA) have been widely used to study electromagnetic transitions and beta decays in medium and heavy nuclei, being the pn-QRPA charge exchange mode extensively employed in the description of single and double beta decays in vibrational nuclei. However develops a collapse, i.e. it presents imaginary eigen-values for strengths beyond a critical value of the force. Extensions called renormalized QRPA (RQRPA) do not develop any collapse going beyond the simplest quasiboson approximation, however they present several drawbacks which will be analyzed.

scholarly journals Collectivity of the low-lying dipole strength in relativistic random phase approximation

2001 ◽  
Vol 692 (3-4) ◽  
pp. 496-517 ◽  
Author(s):  
D. Vretenar ◽  
N. Paar ◽  
P. Ring ◽  
G.A. Lalazissis
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Dipole Strength
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