期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP09(2012)017
关键词
Models of Quantum Gravity; Random Systems
资金
- Polish Ministry of Science [N N202 22913, 182/N-QGG/2008/0, N N202 229137]
- Institute of Theoretical Physics
- Department of Physics and Astronomy at Utrecht University
- Perimeter Institute
- Danish Research Council
The Causal Dynamical Triangulation model of quantum gravity (CDT) has a transfer matrix, relating spatial geometries at adjacent (discrete lattice) times. The transfer matrix uniquely determines the theory. We show that the measurements of the scale factor of the (CDT) universe are well described by an effective transfer matrix where the matrix elements are labeled only by the scale factor. Using computer simulations we determine the effective transfer matrix elements and show how they relate to an effective minisuperspace action at all scales.
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