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math-ph2005
Transformation brackets between U(n+1) -> U(n) -> SO(n) and U(n+1) -> SO(n+1) -> SO(n)
Elena Santopinto, Roelof Bijker, Francesco Iachello
We derive a general expression for the transformation brackets between the chains U(n+1) -> U(n) -> SO(n) and U(n+1) -> SO(n+1) -> SO(n).
nucl-th2005
Phase structure of a two-fluid bosonic system
M. A. Caprio, F. Iachello
The phase diagram of a two-fluid bosonic system is investigated. The proton-neutron interacting boson model (IBM-2) possesses a rich phase structure involving three control paramet…