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dc.contributor.authorColin, Samuel
dc.contributor.authorDurt, Thomas
dc.contributor.authorTumulka, Roderich
dc.date.accessioned2017-05-03T15:36:23Z
dc.date.available2017-05-03T15:36:23Z
dc.date.issued2006
dc.date.modified2010-07-22T06:52:51Z
dc.identifier.issn03054470
dc.identifier.doi10.1088/0305-4470/39/50/008
dc.identifier.urihttp://hdl.handle.net/10072/32508
dc.description.abstractThe meaning of superselection rules in Bohm-Bell theories (i.e., quantum theories with particle trajectories) is different from that in orthodox quantum theory. More precisely, there are two concepts of superselection rule, a weak and a strong one. Weak superselection rules exist both in orthodox quantum theory and in Bohm-Bell theories and represent the conventional understanding of superselection rules. We introduce the concept of strong superselection rule, which does not exist in orthodox quantum theory. It relies on the clear ontology of Bohm-Bell theories and is a sharper and, in the Bohm-Bell context, more fundamental notion. A strong superselection rule for the observable G asserts that one can replace every state vector by a suitable statistical mixture of eigenvectors of G without changing the particle trajectories or their probabilities. A weak superselection rule asserts that every state vector is empirically indistinguishable from a suitable statistical mixture of eigenvectors of G. We establish conditions on G for both kinds of superselection. For comparison, we also consider both kinds of superselection in theories of spontaneous wavefunction collapse.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherInstitute of Physics Publishing
dc.publisher.placeBristol, UK
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom15403
dc.relation.ispartofpageto15419
dc.relation.ispartofjournalJournal of Physics A: Mathematical and General
dc.relation.ispartofvolume39
dc.rights.retentionY
dc.subject.fieldofresearchField Theory and String Theory
dc.subject.fieldofresearchQuantum Physics not elsewhere classified
dc.subject.fieldofresearchMathematical Sciences
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchcode020602
dc.subject.fieldofresearchcode020699
dc.subject.fieldofresearchcode01
dc.subject.fieldofresearchcode02
dc.titleOn superselection rules in Bohm-Bell theories
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2006
gro.hasfulltextNo Full Text
gro.griffith.authorColin, Samuel


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