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Author Zeh, H. D.
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-09-17
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Quantum Physics ♦ Condensed Matter - Quantum Gases ♦ High Energy Physics - Theory ♦ Physics - Popular Physics ♦ physics:cond-mat ♦ physics:hep-th ♦ physics:physics ♦ physics:quant-ph
Abstract I review arguments demonstrating how the concept of "particle" numbers arises in the form of equidistant energy eigenvalues of coupled harmonic oscillators representing free fields. Their quantum numbers (numbers of nodes of the wave functions) can be interpreted as occupation numbers for objects with a formal mass (defined by the field equation) and spatial wave number ("momentum") characterizing classical field modes. A superposition of different oscillator eigenstates, all consisting of n modes having one node, while all others have none, defines a nondegenerate "n-particle wave function". Other discrete properties and phenomena (such as particle positions and "events") can be understood by means of the fast but smooth process of decoherence: the irreversible dislocalization of superpositions. Any wave-particle dualism thus becomes obsolete. The observation of individual outcomes of this decoherence process in measurements requires either a subsequent collapse of the wave function or a "branching observer" in accordance with the Schr\"odinger equation - both possibilities applying clearly after the decoherence process. Any probability interpretation of the wave function in terms of local elements of reality, such as particles or other classical concepts, would open a Pandora's box of paradoxes, as is illustrated by various misnomers that have become popular in quantum theory.
Description Comment: 18 pages. v2: Some text and two references added. v3: Minor changes, one reference added. v4: 21 pages. Submitted to AmJP (not accepted). v5: Minor changes (mainly formulations). v6: Accepted by Found.Phys. Final version is available at http://www.springerlink.com
Reference: Found.Phys.40:1476-1493, 2010
Educational Use Research
Learning Resource Type Article
Page Count 21


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