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hep-th2024★ 6 cited
Differential equations for tree--level cosmological correlators with massive states
Federico Gasparotto, Pouria Mazloumi, Xiaofeng Xu
We study mathematical aspects concerning two site tree-level cosmological correlators with massive internal and external states in a de Sitter universe. We employ integration by pa…
hep-th2024
On the electron self-energy to three loops in QED
Claude Duhr, Federico Gasparotto, Christoph Nega +2
We compute the electron self-energy in Quantum Electrodynamics to three loops in terms of iterated integrals over kernels of elliptic type. We make use of the differential equation…