Infinite-dimensional hierarchy of recursive extensions for all subn-leading soft effects in Yang-Mills
Building on our proposal in [1] , we present in detail the construction of the extended phase space for Yang-Mills at null infinity, containing the asymptotic symmetries and the charges responsible for subn-leading soft theorems at all orders. The generality of the procedure allows it to be directly...
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| Outros autores: | , |
| Formato: | article |
| Idioma: | inglés |
| Publicado: |
2024
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| Subjects: | |
| Acceso en liña: | https://hdl.handle.net/20.500.12008/48874 |
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| Summary: | Building on our proposal in [1] , we present in detail the construction of the extended phase space for Yang-Mills at null infinity, containing the asymptotic symmetries and the charges responsible for subn-leading soft theorems at all orders. The generality of the procedure allows it to be directly applied to the computation of both tree and loop-level soft limits. We also give a detailed study of Yang-Mills equations under the radial expansion, giving a thorough construction of the radiative phase space for decays compatible with tree-level amplitudes for both light-cone and radial gauges. This gives rise to useful recursion relations at all orders between the field strength and the vector gauge coefficients. We construct the subn-leading charges recursively, and show a hierarchical truncation such that each charge subalgebra is closed, and their action in the extended phase space is canonical. We relate these results with the infinite-dimensional algebras that have been recently introduced in the context of conformal field theories at null infinity. We also apply our method to the computation of non-universal terms in the sub-leading charges arising in theories with higher derivative interaction terms. |
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