[1] Louisell W H. Quantum Statistical Properties of Radiation ［M］. New York: John Wiley and Sons, 1973.
[2] Wang J S, Liu T K, Zhan M S. Quantum wavefunctions and fluctuations of mesoscopic RLC circuit ［J］. Chinese Physics Letters, 2000, 17(7): 528-529.
[6] Takahashi Y, Umezawa H. Thermo field dynamics ［J］. Collective Phenomena, 1975, 2: 55-80.
[7] Fan H Y, Lu H L, Fan Y. Newton-Leibniz integration for ket-bra operators in quantum mechanics and derivation of entangled state representations ［J］. Annals of Physics, 2006, 321(2): 480-494.
[8] Fan Hongyi, Xu Xuexiang, Hu Liyun. Entropy-variation with resistance in a quantized RLC circuit derived by the generalized Hellmann-Feynman theorem ［J］. Chin. Phys. B, 2010, 19(6): 060502.
