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arxiv 1805.01873 v2 pith:N6SF45FQ submitted 2018-05-04 hep-th hep-phmath.AG

Complete integration-by-parts reductions of the non-planar hexagon-box via module intersections

classification hep-th hep-phmath.AG
keywords methodcompletehexagon-boxintegralsintegration-by-partsnon-planarreductionsystems
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present the powerful module-intersection integration-by-parts (IBP) method, suitable for multi-loop and multi-scale Feynman integral reduction. Utilizing modern computational algebraic geometry techniques, this new method successfully trims traditional IBP systems dramatically to much simpler integral-relation systems on unitarity cuts. We demonstrate the power of this method by explicitly carrying out the complete analytic reduction of two-loop five-point non-planar hexagon-box integrals, with degree-four numerators, to a basis of $73$ master integrals.

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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. Integral Reduction with Kira 2.0 and Finite Field Methods

    hep-ph 2020-08 conditional novelty 7.0

    Kira 2.0 implements finite-field coefficient reconstruction for IBP reductions and improved user-equation handling, yielding lower memory use and faster performance on state-of-the-art problems.

  2. A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons

    hep-ph 2019-06 unverdicted novelty 7.0

    First numerical evaluation of planar two-loop helicity amplitudes for W-boson plus four partons using finite-field reduction and sector decomposition on a subset of master integrals.

  3. On the spanning cuts consistency problem in the IBP reductions of Feynman integrals

    hep-ph 2026-06 unverdicted novelty 6.0

    Inconsistency in spanning cuts for IBP reductions arises because cuts can make hidden terms in IBP relations finite via pinch singularities that cancel vanishing parameters, linked to hidden linear relations between p...