Towards coarse graining of discrete Lorentzian quantum gravity
A first step towards implementing a notion of coarse graining in an intrinsically Lorentzian, discrete quantum-gravity approach, namely causal set quantum gravity, is taken. It makes use of an abstract notion of scale, based on counting the number of discrete elements. To that end, the space of acti...
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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
12 January 2018
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| In: |
Classical and quantum gravity
Year: 2018, Volume: 35, Issue: 4 |
| ISSN: | 1361-6382 |
| DOI: | 10.1088/1361-6382/aaa0a3 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1088/1361-6382/aaa0a3 Verlag, Volltext: https://doi.org/10.1088%2F1361-6382%2Faaa0a3 
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| Author Notes: | Astrid Eichhorn |
MARC
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| 520 | |a A first step towards implementing a notion of coarse graining in an intrinsically Lorentzian, discrete quantum-gravity approach, namely causal set quantum gravity, is taken. It makes use of an abstract notion of scale, based on counting the number of discrete elements. To that end, the space of actions for causal set quantum gravity is written in a matrix-model-like language, and a flow equation for the effective action of the model is derived from the path integral. | ||
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