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Complete sets of lo...
Complete sets of logarithmic vector fields for integration-by-parts identities of Feynman integrals
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- Boehm, Janko (författare)
- TU Kaiserslautern, Dept Math, D-67663 Kaiserslautern, Germany
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- Georgoudis, Alessandro (författare)
- Uppsala universitet,Teoretisk fysik
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- Larsen, Kasper J. (författare)
- Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England
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- Schulze, Mathias (författare)
- TU Kaiserslautern, Dept Math, D-67663 Kaiserslautern, Germany
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- Zhang, Yang (författare)
- Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, D-55128 Mainz, Germany;Swiss Fed Inst Technol, Wolfang Pauli Str 27, CH-8093 Zurich, Switzerland
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(creator_code:org_t)
- 2018
- 2018
- Engelska.
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Ingår i: Physical Review D. - 2470-0010 .- 2470-0029. ; 98:2
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Integration-by-parts identities between loop integrals arise from the vanishing integration of total derivatives in dimensional regularization. Generic choices of total derivatives in the Baikov or parametric representations lead to identities which involve dimension shifts. These dimension shifts can be avoided by imposing a certain constraint on the total derivatives. The solutions of this constraint turn out to be a specific type of syzygies which correspond to logarithmic vector fields along the Gram determinant formed of the independent external and loop momenta. We present an explicit generating set of solutions in Baikov representation, valid for any number of loops and external momenta, obtained from the Laplace expansion of the Gram determinant. We provide a rigorous mathematical proof that this set of solutions is complete. This proof relates the logarithmic vector fields in question to ideals of submaximal minors of the Gram matrix and makes use of classical resolutions of such ideals.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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