0 Se p 20 09 Time in quantum physics : From an external parameter to an intrinsic observable

@inproceedings{Brunetti20090SP,
  title={0 Se p 20 09 Time in quantum physics : From an external parameter to an intrinsic observable},
  author={Romeo Brunetti and Klaus Fredenhagen and Marc Hoge},
  year={2009}
}
In the Schrödinger equation, time plays a special rôle as an external parameter. We show that in an enlarged system where the time variable denotes an additional degree of freedom, solutions of the Schrödinger equation give rise to weights on the enlarged algebra of observables. States in the associated GNS representation correspond to states on the original algebra composed with a completely positive unit preserving map. Application of this map to the functions of the time operator on the… CONTINUE READING