Initial states and decoherence of histories

Abstract

We study decoherence properties of arbitrarily long histories constructed from a fixed projective partition of a finite dimensional Hilbert space. We show that decoherence of such histories for all initial states that are naturally induced by the projective partition implies decoherence for arbitrary initial states. In addition we generalize the simple necessary decoherence condition [Scherer et al., Phys. Lett. A (2004)] for such histories to the case of arbitrary coarse-graining.

10 pages

References in corpus (2)

• Anomalies of weakened decoherence criteria for quantum histories
• A simple necessary decoherence condition for a set of histories

Cited by in corpus (1)

• Classical predictability and coarse-grained evolution of the quantum baker's map