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Adaptive coarse graining, environment, strong decoherence, and quasiclassical realms

Gell-Mann, Murray and Hartle, James B. (2014) Adaptive coarse graining, environment, strong decoherence, and quasiclassical realms. Physical Review A, 89 (5). Art. No. 052125. ISSN 1050-2947. http://resolver.caltech.edu/CaltechAUTHORS:20150824-094112601

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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: (i) branch-dependent adaptive coarse grainings that can be close to maximally refined and can simplify calculation, (ii) narrative coarse grainings that describe how features of the universe change over time and allow the construction of an environment, and (iii) a notion of strong decoherence that characterizes realistic mechanisms of decoherence.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevA.89.052125DOIArticle
http://journals.aps.org/pra/abstract/10.1103/PhysRevA.89.052125PublisherArticle
http://arxiv.org/abs/1312.7454arXivDiscussion Paper
Additional Information:©2014 American Physical Society. (Received 14 January 2014; published 21 May 2014) We thank the Aspen Center for Physics for hospitality over several summers while this work was in progress. J.B.H. thanks the Santa Fe Institute for supporting many visits there. The work of J.B.H. was supported in part by the National Science Foundation under Grants No. PHY05-55669, No. PHY08-55415, and No. PHY12-05500. The work of M.G.-M. was supported by the COUQ Foundation, by Insight Venture Management, and by the KITP in Santa Barbara. The generous help provided by these organizations is gratefully acknowledged.
Funders:
Funding AgencyGrant Number
Santa Fe InstituteUNSPECIFIED
NSFPHY05-55669
NSFPHY08-55415
NSFPHY12-05500
COUQ FoundationUNSPECIFIED
Insight Venture ManagementUNSPECIFIED
Kavli Institute for Theoretical PhysicsUNSPECIFIED
Classification Code:PACS number(s): 03.65.Ta, 03.65.Yz, 98.80.Qc
Record Number:CaltechAUTHORS:20150824-094112601
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150824-094112601
Official Citation:Adaptive coarse graining, environment, strong decoherence, and quasiclassical realms Murray Gell-Mann and James B. Hartle Phys. Rev. A 89, 052125 http://dx.doi.org/10.1103/PhysRevA.89.052125
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59835
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:24 Aug 2015 17:52
Last Modified:24 Aug 2015 17:52

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