INVESTIGADORES
MARIANO Alejandro Edgardo
artículos
Título:
The number conserving renormalized random phase approximation
Autor/es:
A. MARIANO
Revista:
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
Editorial:
World Scientic Publishing Company
Referencias:
Año: 2006 vol. 20 p. 5334 - 5337
ISSN:
0217-9792
Resumen:
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 betadecays in vibrational nuclei. However develops a collapse, i.e. it presents imaginary eigenvalues for strengths beyond a critical value of the force. Extensions called renormalized QRPA (RQRPA) do not develop any collapse going beyond the simplest quasibosonapproximation, however they present several drawbacks which will be analyzed.
