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Resurgent expansion of Lambert series and iterated Eisenstein integrals

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arxiv 2001.11035 v1 pith:XQFDUDDT submitted 2020-01-29 hep-th math.NT

classification hep-thmath.NT
keywords integralseisensteinexpansioniteratedlambertseriesamplitudesattention
verification ladder T0 review T1 audit T2 compute T3 formal
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We consider special Lambert series as generating functions of divisor sums and determine their complete transseries expansion near rational roots of unity. Our methods also yield new insights into the Laurent expansions and modularity properties of iterated Eisenstein integrals that have recently attracted attention in the context of certain period integrals and string theory scattering amplitudes.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Resurgent Lambert series with characters

    math.NT 2025-07 conditional novelty 7.0 of 10

    A complete transseries expansion is derived for doubly Dirichlet-twisted Lambert series near q=1, with applications to quantum modularity and topological string spectral traces.

  2. Resurgent Lambert series from Feynman and beyond

    hep-th 2026-07 conditional novelty 6.0 of 10

    Sunrise/banana Feynman integrals and topological-string spectral traces are Lambert series twisted by Dirichlet characters; the P^{m,n} case with conductor N=m+n+1 splits into terminating even-character contributions ...

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