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One-loop off-shell amplitudes from classical equations of motion
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SYSNO ASEP 0579751 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title One-loop off-shell amplitudes from classical equations of motion Author(s) Gomez, H. (GB)
Lipinski Jusinskas, Renann (FZU-D) ORCID
Lopez-Arcos, C. (CO)
Velez, A.Q. (CO)Number of authors 4 Article number 081601 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 130, č. 8 (2023)Number of pages 7 s. Language eng - English Country US - United States Keywords classical solutions in field theory ; field and string theory models and techniques ; scattering amplitudes Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000982318800008 EID SCOPUS 85149697244 DOI https://doi.org/10.1103/PhysRevLett.130.081601 Annotation In this Letter, we present a recursive method for computing one-loop off-shell integrands in colored quantum field theories. First, we generalize the perturbiner method by recasting the multiparticle currents as generators of off-shell tree-level amplitudes. After, by taking advantage of the underlying color structure, we define a consistent sewing procedure to iteratively compute the one-loop integrands. When gauge symmetries are involved, the whole procedure is extended to multiparticle solutions involving ghosts, which can then be accounted for in the full loop computation. Since the required input here is equations of motion and gauge symmetry, our framework naturally extends to one-loop computations in certain non-Lagrangian field theories. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0348570
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