2004/05/21 by Rodolfo Gambini, Rafael A. Porto, Rafael Porto +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #Quantum Mechanics and Applications #gr-qc #hep-th #quant-ph
paper · pdf · doi:10.1142/s0218271804006383
published as Int.J.Mod.Phys. D13 (2004) 2315-2320 · 4 pages, no figures, revtex
arxiv created 2004/05/21 · openalex publication_date 2004/12/01 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/07/28
The introduction of a relational time in quantum gravity naturally implies that pure quantum states evolve into mixed quantum states. We show, using a recently proposed concrete implementation, that the rate at which pure states naturally evolve into mixed ones is faster than that due to collapsing into a black hole that later evaporates. This is rather remarkable since the fundamental mechanism for decoherence is usually very weak. Therefore the "black hole information puzzle" is rendered de-facto unobservable.