Matching and positivity beyond minimal coupling in effective theories of photons and gravitons
Abstract We study the low-energy effective theories of photons and gravitons, matching them at one loop to a UV completion with a massive spinning matter particle. The matter is allowed to have non-minimal electromagnetic and gravitational interactions. We construct the one-loop 4-photon and 4-gravi...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-13879-7 |
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| author | Edoardo Alviani Adam Falkowski |
| author_facet | Edoardo Alviani Adam Falkowski |
| author_sort | Edoardo Alviani |
| collection | DOAJ |
| description | Abstract We study the low-energy effective theories of photons and gravitons, matching them at one loop to a UV completion with a massive spinning matter particle. The matter is allowed to have non-minimal electromagnetic and gravitational interactions. We construct the one-loop 4-photon and 4-graviton helicity amplitudes with matter in the loop carrying anomalous multipole moments, and we read off the Wilson coefficients in the effective theory below the matter particle mass. Much as in the case of minimal coupling, the Wilson coefficients beyond the leading order turn out to be confined to small islands in the much larger theory space allowed by existing positivity constraints. |
| format | Article |
| id | doaj-art-54a0902281d64d1d95327d3ff39ebebc |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-54a0902281d64d1d95327d3ff39ebebc2025-02-09T12:51:45ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-02-0185212210.1140/epjc/s10052-025-13879-7Matching and positivity beyond minimal coupling in effective theories of photons and gravitonsEdoardo Alviani0Adam Falkowski1Université Paris-Saclay, CNRS/IN2P3, IJCLabUniversité Paris-Saclay, CNRS/IN2P3, IJCLabAbstract We study the low-energy effective theories of photons and gravitons, matching them at one loop to a UV completion with a massive spinning matter particle. The matter is allowed to have non-minimal electromagnetic and gravitational interactions. We construct the one-loop 4-photon and 4-graviton helicity amplitudes with matter in the loop carrying anomalous multipole moments, and we read off the Wilson coefficients in the effective theory below the matter particle mass. Much as in the case of minimal coupling, the Wilson coefficients beyond the leading order turn out to be confined to small islands in the much larger theory space allowed by existing positivity constraints.https://doi.org/10.1140/epjc/s10052-025-13879-7 |
| spellingShingle | Edoardo Alviani Adam Falkowski Matching and positivity beyond minimal coupling in effective theories of photons and gravitons European Physical Journal C: Particles and Fields |
| title | Matching and positivity beyond minimal coupling in effective theories of photons and gravitons |
| title_full | Matching and positivity beyond minimal coupling in effective theories of photons and gravitons |
| title_fullStr | Matching and positivity beyond minimal coupling in effective theories of photons and gravitons |
| title_full_unstemmed | Matching and positivity beyond minimal coupling in effective theories of photons and gravitons |
| title_short | Matching and positivity beyond minimal coupling in effective theories of photons and gravitons |
| title_sort | matching and positivity beyond minimal coupling in effective theories of photons and gravitons |
| url | https://doi.org/10.1140/epjc/s10052-025-13879-7 |
| work_keys_str_mv | AT edoardoalviani matchingandpositivitybeyondminimalcouplingineffectivetheoriesofphotonsandgravitons AT adamfalkowski matchingandpositivitybeyondminimalcouplingineffectivetheoriesofphotonsandgravitons |