A Universe from a Lagrangian Fixed Point
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913536199884800 |
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| author | Alvarez, Pedro D. Koch, Benjamin Riahinia, Ali Rincon, Angel |
| author_facet | Alvarez, Pedro D. Koch, Benjamin Riahinia, Ali Rincon, Angel |
| contents | In this paper, we investigate the theoretical possibility that a Lagrangian fixed point, when applied to cosmological models, can drive dynamical evolution towards a bouncing universe. We analyze the physics of a Lagrangian fixed point within the context of a gravitational average effective action featuring scale-dependent couplings. To explore this concept, we develop a toy model set in a four-dimensional, spatially flat spacetime, anchored by a Lagrangian fixed point. Solving the cosmological equations of this model analytically, we identify several non-trivial solution branches. These branches are characterized by a modified scale factor and dynamic gravitational couplings, offering new insights into the behavior of cosmological models under these conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_14612 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | A Universe from a Lagrangian Fixed Point Alvarez, Pedro D. Koch, Benjamin Riahinia, Ali Rincon, Angel General Relativity and Quantum Cosmology In this paper, we investigate the theoretical possibility that a Lagrangian fixed point, when applied to cosmological models, can drive dynamical evolution towards a bouncing universe. We analyze the physics of a Lagrangian fixed point within the context of a gravitational average effective action featuring scale-dependent couplings. To explore this concept, we develop a toy model set in a four-dimensional, spatially flat spacetime, anchored by a Lagrangian fixed point. Solving the cosmological equations of this model analytically, we identify several non-trivial solution branches. These branches are characterized by a modified scale factor and dynamic gravitational couplings, offering new insights into the behavior of cosmological models under these conditions. |
| title | A Universe from a Lagrangian Fixed Point |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2312.14612 |