%0 Journal Article %T A unified (classical-quantum-statistical) formalism for continuous spectrum systems %A Mario Castagnino %J Physics %D 2000 %I arXiv %X A unified (classical-quantum-statistical) formalism for a system with continuous spectrum is introduced. For this kind of systems ergodicity behavior and the existence of microcanonical and canonical (KMS) equilibrium is proved. It is argued that the continuous spectrum condition is essential for the thermodynamical behavior %U http://arxiv.org/abs/quant-ph/0008117v1