Original scientific paper

SU (6) - boson extended random phase approximation: new approach to the microscopic substantiation of interacting boson model

Georgi Kyrchev ; Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria
Vladimir Paar ; Prirodno-matematički fakultet, University of Zagreb, 41000 Zagreb, Yugoslavia

Abstract

Lie algebraic approach to the microscopic foundation of Interacting Boson Model – 1 is developed, treating on equal footing the SU (6) governed dynamics and the accompanying SU (6) constraints. In this approach the collective RPA phonon operators are used as „preferred pairs“ with subsequent enforcement of the relevant SU (6) algebra. The „decoupled“ phonon subspace is identified as carrier space of the totally symmetric irreducible representation of SU (6) group. From the microscopic Hamiltonian the fragment with the ensuing IBM-1 boson form is extracted.

Keywords

Hrčak ID:

332392

URI

https://hrcak.srce.hr/332392

Publication date:

5.2.1990.

Article data in other languages: croatian

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