Causality and Localization Operators
arXiv:quant-ph/0409139 · doi:10.1016/j.physleta.2004.11.045
Abstract
The evolution of the expectation values of one and two points scalar field operators and of positive localization operators, generated by an istantaneous point source is non local. Non locality is attributed either to zero point vacuum fluctuations, or to non local operations or to the microcausality principle being no satisfied.
10 pages; submitted to Physics Letters A