Analytic Continuation of the Kite Family

  • Christian BognerEmail author
  • Armin Schweitzer
  • Stefan Weinzierl
Part of the Texts & Monographs in Symbolic Computation book series (TEXTSMONOGR)


We consider results for the master integrals of the kite family, given in terms of ELi-functions which are power series in the nome q of an elliptic curve. The analytic continuation of these results beyond the Euclidean region is reduced to the analytic continuation of the two period integrals which define q. We discuss the solution to the latter problem from the perspective of the Picard–Lefschetz formula.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Christian Bogner
    • 1
    Email author
  • Armin Schweitzer
    • 2
  • Stefan Weinzierl
    • 3
  1. 1.Institut für PhysikHumboldt-Universität zu BerlinBerlinGermany
  2. 2.Institut für Theoretische Physik, ETH ZürichZürichSwitzerland
  3. 3.PRISMA Cluster of Excellence, Institut für PhysikJohannes Gutenberg-Universität MainzMainzGermany

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