Soft Theorems from Higher Symmetries
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866915810263433216 |
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| author | Berean-Dutcher, Jonah Derda, Maria Parra-Martinez, Julio |
| author_facet | Berean-Dutcher, Jonah Derda, Maria Parra-Martinez, Julio |
| contents | We describe the connection between spontaneously-broken higher symmetries and soft theorems for scattering amplitudes of their associated Nambu-Goldstone bosons. Our main result is a new sub-leading double soft pion theorem in theories with a spontaneously-broken continuous 2-group global symmetry, which intertwines amplitudes with different numbers of pions and photons. We also provide a novel derivation of the leading soft photon theorem from the Ward identity of an emergent 1-form global symmetry in effective field theories where antiparticles are integrated out. Our derivations of these soft theorems use the algebra of spacetime currents and do not rely on asymptotic symmetries or diagrammatic arguments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_03566 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Soft Theorems from Higher Symmetries Berean-Dutcher, Jonah Derda, Maria Parra-Martinez, Julio High Energy Physics - Theory We describe the connection between spontaneously-broken higher symmetries and soft theorems for scattering amplitudes of their associated Nambu-Goldstone bosons. Our main result is a new sub-leading double soft pion theorem in theories with a spontaneously-broken continuous 2-group global symmetry, which intertwines amplitudes with different numbers of pions and photons. We also provide a novel derivation of the leading soft photon theorem from the Ward identity of an emergent 1-form global symmetry in effective field theories where antiparticles are integrated out. Our derivations of these soft theorems use the algebra of spacetime currents and do not rely on asymptotic symmetries or diagrammatic arguments. |
| title | Soft Theorems from Higher Symmetries |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2505.03566 |