Results 21 to 30 of about 700,670 (248)
Feynman diagrams in four-dimensional holomorphic theories and the Operatope [PDF]
Journal of High Energy Physics, 2022 We study a class of universal Feynman integrals which appear in four-dimensional holomorphic theories. We recast the integrals as the Fourier transform of a certain polytope in the space of loop momenta (a.k.a. the “Operatope”).
Kasia Budzik +4 more
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Categorical Semantics for Feynman Diagrams [PDF]
arXiv.org, 2022 We introduce a novel compositional description of Feynman diagrams, with well-defined categorical semantics as morphisms in a dagger-compact category.
R. A. Shaikh, S. Gogioso
semanticscholar +1 more source
Hypergeometric Functions and Feynman Diagrams [PDF]
Texts & Monographs in Symbolic Computation, 2020 The relationship between Feynman diagrams and hypergeometric functions is discussed. Special attention is devoted to existing techniques for the constructionof the Y-expansion.
M. Kalmykov +5 more
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Group invariants for Feynman diagrams
SciPost Physics Proceedings, 2023 It is well-known that the symmetry group of a Feynman diagram can give important information on possible strategies for its evaluation, and the mathematical objects that will be involved. Motivated by ongoing work on multi-loop multi-photon amplitudes in
Idrish Huet, Michel Rausch de Traubenberg, Christian Schubert
doaj +1 more source
Synthese, 2021 The way from the path integral to Feynman diagrams is sketched. The emphasis is put on the decrease of complexity in this process, from infinite-dimensional integrals down to the apparent simplicity of child’s play. On the other hand, also the subsequent
R. Harlander
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The quest for purely virtual quanta: fakeons versus Feynman-Wheeler particles
Journal of High Energy Physics, 2020 The search for purely virtual quanta has attracted interest in the past. We consider various proposals and compare them to the concept of fake particle, or “fakeon”.
Damiano Anselmi
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The twistor Wilson loop and the amplituhedron
Journal of High Energy Physics, 2018 The amplituhedron provides a beautiful description of perturbative superamplitude integrands in N = 4 $$ \mathcal{N}=4 $$ SYM in terms of purely geometric objects, generalisations of polytopes. On the other hand the Wilson loop in supertwistor space also
Paul Heslop, Alastair Stewart
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Journal of High Energy Physics, 2023 We studied the two-loop non-factorizable Feynman diagrams for the t-channel single-top production process in quantum chromodynamics. We present a systematic computation of master integrals of the two-loop Feynman diagrams with one internal massive ...
Zihao Wu, Ming-Ming Long
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FeynGame-2.1 -- Feynman diagrams made easy [PDF]
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)FeynGame is an open-source software tool to draw Feynman diagrams, but also to get acquainted with their structure. This article reports on a number of new features which have been added to FeynGame since its first release.
R. Harlander +2 more
semanticscholar +1 more source
Challenges with internal photons in constructive QED
Nuclear Physics B, 2023 We find the correct spinor amplitude for a simple photon-mediated process and show that, in contrast, the result for the same process using the standard constructive techniques do not agree with Feynman diagrams when the fermions are massive.
Neil Christensen +4 more
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