Phase structure and graviton propagators in lattice formulations of four-dimensional quantum gravity
We examine the phase structure of standard Regge calculus in four dimensions and compare our Monte Carlo results with those of the -Regge model as well as with another formulation of lattice gravity derived from group-theoretical considerations. Within all of the three models of quantum gravity we f...
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| Main Authors: | , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
1999
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| In: |
Classical and quantum gravity
Year: 1999, Volume: 16, Issue: 4, Pages: 1163-1173 |
| ISSN: | 1361-6382 |
| DOI: | 10.1088/0264-9381/16/4/006 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/0264-9381/16/4/006
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| Author Notes: | Jürgen Riedler, Wolfgang Beirl, Elmar Bittner, Alf Hauke, Peter Homolka and Harald Markum |
| Summary: | We examine the phase structure of standard Regge calculus in four dimensions and compare our Monte Carlo results with those of the -Regge model as well as with another formulation of lattice gravity derived from group-theoretical considerations. Within all of the three models of quantum gravity we find an extension of the well-defined phase to negative gravitational couplings and a new phase transition. In contrast to the well known transition at positive coupling there is evidence for a continuous phase transition which is essential for a continuum limit. We calculate two-point functions between geometrical quantities at the corresponding critical point and estimate the masses of the respective interaction particles. |
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| Item Description: | Gesehen am 18.10.2022 |
| Physical Description: | Online Resource |
| ISSN: | 1361-6382 |
| DOI: | 10.1088/0264-9381/16/4/006 |