| Revision as of 13:03, 11 October 2006 editGibimi (talk | contribs)13 editsNo edit summary← Previous edit | Revision as of 03:58, 13 January 2007 edit undoForesyte (talk | contribs)1 edit According to Scientific American a third person, Jerzy Jurkiwiecz also is part of this effortNext edit → | ||
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| '''Causal dynamic triangulation''' (abbreviated as "CDT") invented by ] |
'''Causal dynamic triangulation''' (abbreviated as "CDT") invented by ], ] and ] is an approach to ] that like ] is ]. The upcoming ] conference hosted by many loop quantum gravity theorists will feature CDT in much greater depth as it appears to have a good semi-classical description. | ||
| It is a modification of ] where ] is discretized by approximating it by a piecewise linear ] in a process called ]. In this process, a ''d''-dimensional spacetime is considered as formed by space slices that are labeled by a discrete time variable ''t''. Each space slice is approximated by a ] composed by regular ''(d-1)''-dimensional simplices and the connection between these slices is made by a piecewise linear manifold of ''d''-]. | It is a modification of ] where ] is discretized by approximating it by a piecewise linear ] in a process called ]. In this process, a ''d''-dimensional spacetime is considered as formed by space slices that are labeled by a discrete time variable ''t''. Each space slice is approximated by a ] composed by regular ''(d-1)''-dimensional simplices and the connection between these slices is made by a piecewise linear manifold of ''d''-]. | ||
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| ==References== | ==References== | ||
| * | *[http://xstructure.inr.ac.ru/x-bin/theme2.py?arxiv=hep-th&level=1&index1=4637488 Causal dynamic triangulation on arxiv.org | ||
| Alpert, Mark "The Triangular Universe" Scientific American page 24 February 2007 | |||
| {{physics-stub}} | {{physics-stub}} | ||
Revision as of 03:58, 13 January 2007
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Causal dynamic triangulation (abbreviated as "CDT") invented by Renate Loll, Jan Ambjorn and Jerzy Jurkiewicz is an approach to quantum gravity that like loop quantum gravity is background independent. The upcoming loop 2005 conference hosted by many loop quantum gravity theorists will feature CDT in much greater depth as it appears to have a good semi-classical description.
It is a modification of quantum Regge calculus where spacetime is discretized by approximating it by a piecewise linear manifold in a process called triangulation. In this process, a d-dimensional spacetime is considered as formed by space slices that are labeled by a discrete time variable t. Each space slice is approximated by a simplicial manifold composed by regular (d-1)-dimensional simplices and the connection between these slices is made by a piecewise linear manifold of d-simplices.
External links
References
- [http://xstructure.inr.ac.ru/x-bin/theme2.py?arxiv=hep-th&level=1&index1=4637488 Causal dynamic triangulation on arxiv.org
Alpert, Mark "The Triangular Universe" Scientific American page 24 February 2007
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