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The Contextual Computer
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. University of Seville, Spain.
2013 (engelsk)Inngår i: Computable Universe: Understanding and Exploring Nature as Computation / [ed] Zenil, H., Singapore: World Scientific Publishing , 2013, s. 595-604Kapittel i bok, del av antologi (Fagfellevurdert)
Abstract [en]

What kind of computer is the universe? Here we present three results. The first is a consequence of the Kochen-Specker theorem: If the predictions of quantum mechanics are correct, then the universe cannot be a non-contextual computer. We then show that, if we assume that the density of memory is bounded, then the universe cannot be a classical contextual computer. The third result singles out the universe among all possible contextual computers by exploiting a curious connection with graph theory: In the universe, the maximal contextuality of a set of propositions is given by the Lovasz number of the graph representing their mutual exclusiveness.

sted, utgiver, år, opplag, sider
Singapore: World Scientific Publishing , 2013. s. 595-604
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URN: urn:nbn:se:su:diva-107212ISI: 000337346900033ISBN: 978-981-4374-30-9 (tryckt)ISBN: 978-981-4374-29-3 (tryckt)OAI: oai:DiVA.org:su-107212DiVA, id: diva2:743884
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AuthorCount:1;

Tilgjengelig fra: 2014-09-05 Laget: 2014-09-05 Sist oppdatert: 2014-09-05bibliografisk kontrollert

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