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Constructing Canonical Feynman Integrals with Intersection Theory

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arxiv 2008.03045 v2 pith:VRIWVWF4 submitted 2020-08-07 hep-th hep-ph

Constructing Canonical Feynman Integrals with Intersection Theory

classification hep-th hep-ph
keywords integralscanonicalfeynmanintersectionmasterthemtheoryamplitudes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Canonical Feynman integrals are of great interest in the study of scattering amplitudes at the multi-loop level. We propose to construct $d\log$-form integrals of the hypergeometric type, treat them as a representation of Feynman integrals, and project them into master integrals using intersection theory. This provides a constructive way to build canonical master integrals whose differential equations can be solved easily. We use our method to investigate both the maximally cut integrals and the uncut ones at one and two loops, and demonstrate its applicability in problems with multiple scales.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Loop integrals in de Sitter spacetime: The parity-split IBP system and $\mathrm{d}\log$-form differential equations

    hep-th 2026-04 unverdicted novelty 7.0

    A parity-split IBP system for n-propagator families in de Sitter space is identified, along with a conjecture that dlog-form differential equations extend to dS integrands with Hankel functions, verified for the one-l...

  2. Planar master integrals for two-loop NLO electroweak light-fermion contributions to $g g \rightarrow Z H$

    hep-ph 2026-04 unverdicted novelty 6.0

    Analytic expressions for the planar master integrals in two-loop NLO EW light-fermion contributions to gg → ZH are derived via canonical differential equations and expressed using Goncharov polylogarithms or one-fold ...

  3. From geometry to phenomenology

    hep-th 2026-06 unverdicted novelty 3.0

    Feynman integrals with mixed geometries (K3 surfaces, curves, points) can be computed more efficiently by extracting and using their algebraic geometric properties.