Expansion by regions: an overview

2024/06/17 by Smirnov, Vladimir A. · 2 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.2406.11475

Abstract

A short review of expansion by regions is presented. It is a well-known strategy to obtain an expansion of a given multiloop Feynman integral in a given limit where some kinematic invariants and/or masses have certain scaling measured in powers of a given small parameter. Prescriptions of this strategy are formulated in a simple geometrical language and are illustrated through simple examples.

Cited by

• Multiple Mellin-Barnes integrals with polygamma functions
• Off-shell form factor: factorization is violated

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