Approaching the Inverse Problem: Toward Lattice QCD Calculations of Inclusive Hadronic Quantities

Published 21 Jan 2025 in hep-lat | (2501.12259v1)

Abstract: In this talk, I describe some recent ideas relating to the spectral reconstruction inverse problem, which arises frequently in lattice QCD calculations of inclusive hadronic quantities, and provide some physical context for this work. Particular emphasis is given to a new method for rigorously bounding uncertainties using techniques from complex analysis.

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Handling spurious poles when the Pick matrix fails positivity in Nevanlinna–Pick interpolation

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William Jay

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