Ground state particle-particle correlations and double beta decay
Abstract
A self-consistent formalism for the double beta decay of Fermi type is provided. The particle-particle channel of the two-body interaction is considered first in the mean field equations and then in the QRPA. The resulting approach is called the QRPA with a self-consistent mean field (QRPASMF). The mode provided by QRPASMF, does not collapse for any strength of the particle-particle interaction. The transition amplitude for double beta decay is almost insensitive to the variation of the particle-particle interaction. Comparing it with the result of the standard pnQRPA, it is smaller by a factor 6. The prediction for transition amplitude agrees quite well with the exact result. The present approach is the only one which produces a strong decrease of the amplitude and at the same time does not alter the stability of the ground state.
Cite
@article{arxiv.nucl-th/0104082,
title = {Ground state particle-particle correlations and double beta decay},
author = {A. A. Raduta and P. Sarriguren and Amand Faessler and E. Moya de Guerra},
journal= {arXiv preprint arXiv:nucl-th/0104082},
year = {2009}
}
Comments
23 pages, 7 figures