Title
Saturated Kochen-Specker-type configuration of 120 projective lines in eight-dimensional space and its group of symmetrySaturated Kochen-Specker-type configuration of 120 projective lines in eight-dimensional space and its group of symmetry
Author
Faculty/Department
Faculty of Sciences. Mathematics and Computer Science
Research group
Fundamental Mathematics
Publication type
article
Publication
New York, N.Y.,
Subject
Physics
Source (journal)
Journal of mathematical physics. - New York, N.Y.
Volume/pages
46(2005):5, p. 1-28
ISSN
0022-2488
Article Reference
052109
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
There exists an example of a set of 40 projective lines in eight-dimensional Hilbert space producing a Kochen-Specker-type contradiction. This set corresponds to a known no-hidden variables argument due to Mermin. In the present paper it is proved that this set admits a finite saturation, i.e., an extension up to a finite set with the following property: every subset of pairwise orthogonal projective lines has a completion, i.e., is contained in at least one subset of eight pairwise orthogonal projective lines. An explicit description of such an extension consisting of 120 projective lines is given. The idea to saturate the set of projective lines related to Mermin's example together with the possibility to have a finite saturation allow to find the corresponding group of symmetry. This group is described explicitely and is shown to be generated by reflections. The natural action of the mentioned group on the set of all subsets of pairwise orthogonal projective lines of the mentioned extension is investigated. In particular, the restriction of this action to complete subsets is shown to have only four orbits, which have a natural characterization in terms of the construction of the saturation. (C) 2005 American Institute of Physics.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/64bff4/5801.pdf
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