Flowing to the continuum in discrete tensor models for quantum gravity
Tensor models provide a way to access the path-integral for discretized quantum gravity in d dimensions. As in the case of matrix models for two-dimensional quantum gravity, the continuum limit can be related to a Renormalization Group fixed point in a setup where the tensor size N serves as the Ren...
Guardado en:
| Autores principales: | , |
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| Formato: | Article (Journal) Chapter/Article |
| Lenguaje: | inglés |
| Publicado: |
2017
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| In: |
Arxiv
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| Acceso en línea: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1701.03029
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| Notas de Autor: | Astrid Eichhorn and Tim Koslowski |
| Sumario: | Tensor models provide a way to access the path-integral for discretized quantum gravity in d dimensions. As in the case of matrix models for two-dimensional quantum gravity, the continuum limit can be related to a Renormalization Group fixed point in a setup where the tensor size N serves as the Renormalization Group scale. We develop functional Renormalization Group tools for tensor models with a main focus on a rank-3 model for three-dimensional quantum gravity. We rediscover the double-scaling limit and provide an estimate for the scaling exponent. Moreover, we identify two additional fixed points with a second relevant direction in a truncation of the Renormalization Group flow. The new relevant direction might hint at the presence of additional degrees of freedom in the corresponding continuum limit. |
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| Notas: | Gesehen am 11.01.2018 |
| Descripción Física: | Online Resource |