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arXiv · 2412.12057

Calabi-Yau Feynman integrals in gravity: $\varepsilon$-factorized form for apparent singularities

Hjalte Frellesvig·Roger Morales·Sebastian Pögel·Stefan Weinzierl·Matthias Wilhelm
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Abstract

We study a recently identified four-loop Feynman integral that contains a three-dimensional Calabi-Yau geometry and contributes to the scattering of black holes in classical gravity at fifth post-Minkowskian and second self-force order (5PM 2SF) in the conservative sector. In contrast to previously studied Calabi-Yau Feynman integrals, the higher-order differential equation that this integral satisfies in dimensional regularization exhibits $\varepsilon$-dependent apparent singularities. We introduce an appropriate ansatz which allows us to bring such cases into an $\varepsilon$-factorized form. As a proof of principle, we apply it to the integral at hand.

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Hjalte Frellesvig, Roger Morales, Sebastian Pögel, Stefan Weinzierl, Matthias Wilhelm. 2024-12-16. Calabi-Yau Feynman integrals in gravity: $\varepsilon$-factorized form for apparent singularities. https://doi.org/10.1007/jhep02(2025)209

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