Cosmology from asymptotically safe Proca theories
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866911560268513280 |
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| author | Pastor-Marcos, Carlos Heisenberg, Lavinia Pastor-Gutiérrez, Álvaro Pawlowski, Jan M. Reichert, Manuel |
| author_facet | Pastor-Marcos, Carlos Heisenberg, Lavinia Pastor-Gutiérrez, Álvaro Pawlowski, Jan M. Reichert, Manuel |
| contents | Effective field theories for cosmology offer a powerful framework to investigate the dynamics of space--time and address longstanding open puzzles. In this work, we initiate a programme to analyse the ultraviolet completion of vector--tensor quantum field theories within the asymptotic safety paradigm, focusing on generalised Proca theories with a vector condensate. This enables us to assess whether a consistent fundamental UV completion exists and to constrain the set of viable infrared scenarios. Using the non--perturbative functional renormalisation group, we identify several fixed points, including Proca--type candidates, and, among them, a particularly remarkable one with four relevant directions: two associated with gravity and two induced by matter. This provides evidence for the non--perturbative renormalisability of vector--tensor theories. We further outline how the resulting UV critical surface constrains late--time cosmology. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_01090 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Cosmology from asymptotically safe Proca theories Pastor-Marcos, Carlos Heisenberg, Lavinia Pastor-Gutiérrez, Álvaro Pawlowski, Jan M. Reichert, Manuel General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory Effective field theories for cosmology offer a powerful framework to investigate the dynamics of space--time and address longstanding open puzzles. In this work, we initiate a programme to analyse the ultraviolet completion of vector--tensor quantum field theories within the asymptotic safety paradigm, focusing on generalised Proca theories with a vector condensate. This enables us to assess whether a consistent fundamental UV completion exists and to constrain the set of viable infrared scenarios. Using the non--perturbative functional renormalisation group, we identify several fixed points, including Proca--type candidates, and, among them, a particularly remarkable one with four relevant directions: two associated with gravity and two induced by matter. This provides evidence for the non--perturbative renormalisability of vector--tensor theories. We further outline how the resulting UV critical surface constrains late--time cosmology. |
| title | Cosmology from asymptotically safe Proca theories |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2604.01090 |