Adaptive Coarse Graining, Environment, Strong Decoherence, and Quasiclassical Realms
Quantum Physics
2014-05-28 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
Three ideas are introduced that when brought together characterize the realistic quasiclassical realms of our quantum universe as particular kinds of sets of alternative coarse-grained histories defined by quasiclassical variables: (1) Branch dependent adaptive coarse grainings that can be close to maximally refined and can simplify calculation. (2) Narrative coarse grainings that describe how features of the universe change over time and allow the construction of an environment. (3) A notion of strong decoherence that characterizes realistic mechanisms of decoherence.
Cite
@article{arxiv.1312.7454,
title = {Adaptive Coarse Graining, Environment, Strong Decoherence, and Quasiclassical Realms},
author = {Murray Gell-Mann and James B. Hartle},
journal= {arXiv preprint arXiv:1312.7454},
year = {2014}
}
Comments
11 pages, revtex4