Contextuality, decoherence and quantum trajectories

Here we analyze the relationship between quantum contextuality and decoherence in interference experiments with matter particles by means of a simple reduced quantum-trajectory model, which attempts to simulate the behavior of the projections of multi-dimensional, system-plus-environment Bohmian trajectories onto the subspace of the reduced system. This model allows us to understand the crossing of the subsystem trajectories as a combined effect of interference quenching and erasure of “which-way” information, which can be of utility to interpret decoherence effects in manydimensional systems where full Bohmian treatments become prohibitive computationally. PACS numbers: 03.65.Ta,03.65.Ca,03.65.-w,03.65.Yz Electronic address: [email protected] Electronic address: [email protected]