Composite Hybrid Inflation: Dilaton and Waterfall Pions
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866910688434192384 |
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| author | Cacciapaglia, Giacomo Cheong, Dhong Yeon Deandrea, Aldo Isnard, Wanda Park, Seong Chan |
| author_facet | Cacciapaglia, Giacomo Cheong, Dhong Yeon Deandrea, Aldo Isnard, Wanda Park, Seong Chan |
| contents | We investigate the possibility that inflation originates from a composite field theory, in terms of an effective chiral Lagrangian involving a dilaton and pions. The walking dynamics of the theory constrain the potential in a specific way, where the anomalous dimensions of operators involving pions play a crucial role. For realistic values of the anomalous dimensions, we find a successful hybrid inflation occurring via the dilaton-inflaton, with the pions acting as waterfall fields. Compositeness consistency strongly constrain the model, predicting a dilaton scale $f_χ\sim \mathcal{O} (1)$ in unit of the Planck scale, an inflation scale $H_\text{inf} \sim 10^{10}$ GeV, and the pion scale around $10^{14}$ GeV. We further discuss possible phenomenological consequences of this theory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_01852 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Composite Hybrid Inflation: Dilaton and Waterfall Pions Cacciapaglia, Giacomo Cheong, Dhong Yeon Deandrea, Aldo Isnard, Wanda Park, Seong Chan High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics We investigate the possibility that inflation originates from a composite field theory, in terms of an effective chiral Lagrangian involving a dilaton and pions. The walking dynamics of the theory constrain the potential in a specific way, where the anomalous dimensions of operators involving pions play a crucial role. For realistic values of the anomalous dimensions, we find a successful hybrid inflation occurring via the dilaton-inflaton, with the pions acting as waterfall fields. Compositeness consistency strongly constrain the model, predicting a dilaton scale $f_χ\sim \mathcal{O} (1)$ in unit of the Planck scale, an inflation scale $H_\text{inf} \sim 10^{10}$ GeV, and the pion scale around $10^{14}$ GeV. We further discuss possible phenomenological consequences of this theory. |
| title | Composite Hybrid Inflation: Dilaton and Waterfall Pions |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2307.01852 |