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We define the rigidity of a Feynman integral to be the smallest dimension over which it is non-polylogarithmic.
1901
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S. Caron-Huot and K. J. Larsen, “Uniqueness of Two-Loop Master Contours,” JHEP
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2012
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M. F. Paulos, M. Spradlin, and A. Volovich, “Mellin Amplitudes for Dual Conformal Integrals,” JHEP
2012
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F. Brown and O. Schnetz, “A K3 in φ 4 \varphi^{4} ,” Duke Math. J
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2016
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2016
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2017
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2017
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2013
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2013
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J. M. Drummond, “Generalised Ladders and Single-Valued Polylogarithms,” JHEP
2013
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2014
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2014
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E. Panzer, “On Hyperlogarithms and Feynman Integrals with Divergences and Many Scales,” JHEP
2014
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S. Bloch and P. Vanhove, “The Elliptic Dilogarithm for the Sunset Graph,” J. Number Theory
2015
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S. Bloch, M. Kerr, and P. Vanhove, “A Feynman Integral via Higher Normal Functions,” Compos. Math
2015
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2017
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2017
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J. L. Bourjaily, E. Herrmann, and J. Trnka, “Prescriptive Unitarity,” JHEP
2017
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E. Panzer and O. Schnetz, “The Galois Coaction on φ 4 \varphi^{4} Periods,” Commun. Num. Theor. Phys
2017
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T. Fleury and S. Komatsu, “Hexagonalization of Correlation Functions,” JHEP
2017
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B. Basso and L. J. Dixon, “Gluing Ladder Feynman Diagrams into Fishnets,” Phys. Rev. Lett
2017
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2018
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J. L. Bourjaily, A. J. McLeod, M. von Hippel, and M. Wilhelm, “Rationalizing Loop Integration,” JHEP
2018
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2018
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