1993/03/19 by J. Twamley, Twamley, J.
Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #gr-qc
paper · pdf · doi:10.48550/arxiv.gr-qc/9303022
10 pages
arxiv created 1993/03/19 · arxiv updated 2009/11/30
We study the decoherence properties of a certain class of Markovian quantum open systems from both the Decohering Histories and Environment Induced Superselection paradigms. The class studied includes many familiar quantum optical cases. For this class, we show that there always exists a basis which leads to \em exactly consistent histories for any coarse graining \em irrespective of the initial conditions. The magnitude of the off--diagonal elements of the reduced density matrix ρ in this basis however, depends on the initial conditions. Necessary requirements for classicality as advanced by the two paradigms are thus in direct conflict in these systems.