Gauge theories from scattering amplitudes with minimal assumptions
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908758576201728 |
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| author | Fonseca, Renato M. Hernandez-Garcia, Clara Lizana, Javier M. Perez-Victoria, Manuel |
| author_facet | Fonseca, Renato M. Hernandez-Garcia, Clara Lizana, Javier M. Perez-Victoria, Manuel |
| contents | We revisit the emergence of a Yang-Mills symmetry in theories with massless spin 1 particles from fundamental physical properties of scattering amplitudes. In the standard proofs, some symmetry and reality properties of the coupling constants in three-point amplitudes are assumed. These properties cannot be justified using only three-point amplitudes but we show that they arise as consequences of the consistent factorization of four-particle amplitudes, for particular choices of the particle basis. This applies to self-interactions of massless spin 1 particles and also to their interactions with spin 0 and 1/2 particles. CP invariance is a derived property, not an additional assumption. The situation for gravity interactions is analogous and it is dealt with in the same fashion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_21664 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gauge theories from scattering amplitudes with minimal assumptions Fonseca, Renato M. Hernandez-Garcia, Clara Lizana, Javier M. Perez-Victoria, Manuel High Energy Physics - Theory High Energy Physics - Phenomenology We revisit the emergence of a Yang-Mills symmetry in theories with massless spin 1 particles from fundamental physical properties of scattering amplitudes. In the standard proofs, some symmetry and reality properties of the coupling constants in three-point amplitudes are assumed. These properties cannot be justified using only three-point amplitudes but we show that they arise as consequences of the consistent factorization of four-particle amplitudes, for particular choices of the particle basis. This applies to self-interactions of massless spin 1 particles and also to their interactions with spin 0 and 1/2 particles. CP invariance is a derived property, not an additional assumption. The situation for gravity interactions is analogous and it is dealt with in the same fashion. |
| title | Gauge theories from scattering amplitudes with minimal assumptions |
| topic | High Energy Physics - Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.21664 |