Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1745
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMajor, Seth A.-
dc.contributor.authorRideout, David-
dc.contributor.authorSurya, Sumati-
dc.date.accessioned2007-01-08T05:51:35Z-
dc.date.available2007-01-08T05:51:35Z-
dc.date.issued2006-07-21-
dc.identifier.citationClassical and Quantum Gravity, 2006, Vol.23 p4743-4751en
dc.identifier.issn0264-9381-
dc.identifier.issn1361-6382 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/1745-
dc.descriptionRestricted Access. An open access version is available at arXiv.org.en
dc.description.abstractWithin the causal set approach to quantum gravity, a discrete analogue of a spacelike region is a set of unrelated elements, or an antichain. In the continuum approximation of the theory, a moment-of-time hypersurface is well represented by an inextendible antichain. We construct a richer structure corresponding to a thickening of this antichain containing non-trivial geometric and topological information. We find that covariant observables can be associated with such thickened antichains and transitions between them, in classical sequential growth models of causal sets. This construction highlights the difference between the covariant measure on causal set cosmology and the standard sum-over-histories approach: the measure is assigned to completed histories rather than to histories on a restricted spacetime region. The resulting re-phrasing of the sum-over-histories may be fruitful in other approaches to quantum gravity.en
dc.format.extent164243 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherThe IOP Publishing Ltd.en
dc.relation.urihttp://dx.doi.org/10.1088/0264-9381/23/14/011en
dc.relation.urihttp://arxiv.org/abs/gr-qc/0506133en
dc.rights(2006) by the IOP Publishing Ltd.en
dc.titleSpatial hypersurfaces in causal set cosmologyen
dc.typeArticleen
Appears in Collections:Research Papers (TP)

Files in This Item:
File Description SizeFormat 
2006 CQG V23 p4743.pdf
  Restricted Access
Restricted Access160.39 kBAdobe PDFView/Open Request a copy


Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.