Spectral densities from Euclidean-time lattice correlation functions
M. Saccardi*,
M. Bruno and
L. Giusti*: corresponding author
Pre-published on:
January 27, 2025
Published on:
—
Abstract
In quantum field theories, spectral densities are directly related to relevant physical observables. In Lattice QCD, their non-perturbative extraction from first principles requires the Inverse Laplace transform of Euclidean-time correlation functions, a notorious ill-posed problem. Here we review our recent proposal [1,2] for a new strategy to perform this inversion both in the continuum and on the lattice, also suitable for smeared spectral densities, both in the continuum and in the discrete cases.
DOI: https://doi.org/10.22323/1.466.0320
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