Discrete Quantum Causal Dynamics

摘要: We give a mathematical framework to describe the evolution of open quantum systems subject finitely many interactions with classical apparatuses and each other. The in question may be composed distinct, spatially separated subsystems which evolve independently, but also interact. This evolution, driven both by unitary operators measurements, is coded structure such way that crucial properties causality, covariance, entanglement are faithfully represented. key this scheme use special family spacelike slices—we call them locative—that not so large as result acausal influences enough capture nonlocal correlations.