摘要
Statistical properties like nearest neighbor spacing distribution (NNSD), number of principal components (NPC), information entropy (Sinfo) and number entropy (Soccu) have been studied for interacting boson systems using one-body (H1) and an embedded GOE of two-body (H2) interactions. The NNSD for the bosonic ensembles moves steadily from Poisson to Wigner form as the 2-body interaction strength λ in the H=H1+λH2 is varied. Critical strength λC for the transition, agrees with Jacquad and Shepelyansky criterion. For NPC, Sinfo and Soccu, there is another transition point λF, as in fermionic ensembles. Bosonic ensembles in the dense limit tend to be ergodic with increasing the number of single-particle states.