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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
Sažetak
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.
Ključne riječi
Hrčak ID:
332392
URI
Datum izdavanja:
5.2.1990.
Posjeta: 343 *