TY - JOUR

T1 - Spurious states and stability condition in extended RPA theories

AU - Tselyaev, V. I.

PY - 2014

Y1 - 2014

N2 - The problems of the spurious (ghost) states and of convergence and stability of the model’s solutions are considered as applied to the theories which can be classified as the versions of the extended random phase approximation. It is shown that stability is ensured by making use of the subtraction method proposed previously. The spurious states are eliminated with the help of the projection technique. The particular case of the dipole spurious states is considered. These results are illustrated by the calculations of the low-lying states in the nucleus 208Pb.

AB - The problems of the spurious (ghost) states and of convergence and stability of the model’s solutions are considered as applied to the theories which can be classified as the versions of the extended random phase approximation. It is shown that stability is ensured by making use of the subtraction method proposed previously. The spurious states are eliminated with the help of the projection technique. The particular case of the dipole spurious states is considered. These results are illustrated by the calculations of the low-lying states in the nucleus 208Pb.

U2 - 10.1063/1.4891134

DO - 10.1063/1.4891134

M3 - Article

VL - 1606

SP - 201

EP - 207

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

SN - 0094-243X

ER -