Effects of the particle-particle channel on properties of low-lying vibrational states

Severyukhin, A. P.; Voronov, V. V.; Van Giai, Nguyen

Effects of the particle-particle channel on properties of low-lying vibrational states

Authors

Severyukhin, A. P.

Voronov, V. V.

Van Giai, Nguyen

Description

Making use of the finite rank separable approach for the quasiparticle random phase approximation enables one to perform nuclear structure calculations in very large two-quasiparticle spaces. The approach is extended to take into account the residual particle-particle interaction. The calculations are performed by using Skyrme interactions in the particle-hole channel and density-dependent zero-range interactions in the particle-particle channel. To illustrate our approach, we study the properties of the lowest quadrupole states in the even-even nuclei $^{128}$Pd, $^{130}$Cd, $^{124-134}$Sn, $^{128-136}$Te and $^{136}$Xe.
8 pages REVTEX, 4 eps figures, submitted to Phys. Rev. C