Quantum Statistics for General Quadratic System
Pan Jianwei, Yu Sixia, Zhang Yongde, Siu Gueigu · Communications in Theoretical Physics · 1999
By the generalized linear quantum transformation theory, we concisely derive the analytic expressions of partition function for general quadratic systems of multi-mode boson and fermion Fock space without any information for the energy spectrum. Under a general condition, we firstly acquire the exact expressions of energy spectra for these systems.