Interacting Boson approximation

Olaf Scholten

С.П. Иванова, R. V. Jolos, R. Pedrosa

Kapil M. Khanna, S.N. Mehrotra

Heng Wu

By utilizing the 1/N expansion technique, the SU(3)-symmetry breaking caused by boson energies is discussed for the sdg Interacting Boson Model, and the analytical expressions of the intrinsic states are given under the approximation in the order of 1/N. It is also shown that the many body theories for a interacting boson system, such as Hartree-Bose method, Tamm- Dancoff approximation and Cranked Hartree approximation, are all special cases of the 1/N expansion technique.

Abraham Klein

Tiefeng Xu, Wenzhu Li

The random-phase approximation (RPA) of interacting fermions is recast into a bosonized form and the RPA results are rederived by the standard bosonization method, which shows that there is a natural connection between bosonization and RPA.