[1] [1] Pan J W, Zhang Y D, Siu G G. Exact expressions of energy spectrum and partition function for quantum quadraticsystums [J]. Chin. Phys. Lett., 1997, 14:241

[2] [2] Pan J W, Dong Q X, Zhang Y D et al. Analytic calculation of arbitrary matrix for the boson exponential quadratic operator [J] Phys. Rev. E, 1997, 56:2553 Yu S X, Zhang Y D. Linear quantum transfuormation theory of multi-made boson and its application to calculation of partition function [J]. Commun. Theor. Phys., 1995, 24:185

[3] [3] Bogoliubov N N. Linear quantum transfuormation theory in bargmann-fock space and its preliminary applica tions [J]. Commun Theor. Phys., 1995, 23:57

[4] [4] Blaizot J P. Quantum Theory of Finite Systems [M]. Massachusetts: MIT Press, 1986

[5] [5] Zhang Y D, Tang Z J. Quantum transformation theory in fermion fock space [J]. Math Phys., 1993, 34:5639

[6] [6] Zhang Y D, Tang Z. General theory of linear quantum transfuormation theory of bargmann-fock space [J]. NuovoCimento. B, 1994, 109:387