Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2012-02-16
Physics
Nuclear Physics
Nuclear Theory
8 pages, XXXIV edition of the Brazilian Workshop on Nuclear Physics, 5-10 June 2011, Foz de Igua\c{c}u, Paran\'a state, Brasil
Scientific paper
We perform a self-consistent relativistic QRPA (RQRPA) calculation of $2\nu\b\b$-decay based on relativistic BCS (RBCS) mean field theory results for odd-odd intermediate nuclei $^{48}$Sc, $^{76}$As, $^{82}$Br, $^{100}$Tc, $^{128}$I, and $^{130}$I. The RBCS equations that resemble the non-relativistic ones are constructed from a Dirac-Gorkov variational functional. We use the parameter set $NL1$ for the $\sigma$, $\omega$ and $\rho$ mesons. The RQRPA equations are solved for the residual $\pi+\rho$ interaction by employing the same parameters used in the RBCS for the latter meson, and experimental values for the pion and nucleon. The RQRPA results for the ${2\nu}\b\b$ matrix elements are similar to those obtained within the QRPA and the shell model.
Carlson Brett Vern
Conti Cláudio de
Krmpotic Francisco
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