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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.05130 |
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| _version_ | 1866911652996186112 |
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| author | Chattopadhyay, Pratik Wadhwa, Avi |
| author_facet | Chattopadhyay, Pratik Wadhwa, Avi |
| contents | Chern-Simons perturbations introduce corrections to soft theorems for gauge theories at subleading $\mathcal{O}\left(ω^0\right)$ order in soft momenta. We investigate these soft theorems in flat spacetime with perturbative $1/\ell^2$ de Sitter corrections. Following previous works, we define the perturbative scattering matrix in a compact region in the static patch of de Sitter. We show that Chern-Simons corrections do not mix with the $1/\ell^2$ de Sitter curvature corrections at subleading order $\mathcal{O}\left(ω^0\right)$. Alternatively, one can say that the subleading Chern-Simons soft factors are insensitive to the de Sitter curvature at this order, indicating their topological nature at the level of amplitudes. This also suggests a universal behavior of these Chern-Simons soft factors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_05130 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Subleading Chern-Simons soft factors in perturbative de Sitter Chattopadhyay, Pratik Wadhwa, Avi High Energy Physics - Theory Chern-Simons perturbations introduce corrections to soft theorems for gauge theories at subleading $\mathcal{O}\left(ω^0\right)$ order in soft momenta. We investigate these soft theorems in flat spacetime with perturbative $1/\ell^2$ de Sitter corrections. Following previous works, we define the perturbative scattering matrix in a compact region in the static patch of de Sitter. We show that Chern-Simons corrections do not mix with the $1/\ell^2$ de Sitter curvature corrections at subleading order $\mathcal{O}\left(ω^0\right)$. Alternatively, one can say that the subleading Chern-Simons soft factors are insensitive to the de Sitter curvature at this order, indicating their topological nature at the level of amplitudes. This also suggests a universal behavior of these Chern-Simons soft factors. |
| title | Subleading Chern-Simons soft factors in perturbative de Sitter |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2605.05130 |