2 citations · 3 across the 8 of their papers we have counts for
8 papers
Spectral densities from Euclidean correlators via integral transforms: theoretical framework
Leonardo Giusti, Matteo Saccardi, Diego Toniolo
Spectral densities link experimental measurements to dynamical properties of a quantum field theory which, in turn, can be resolved non-perturbatively from the Euclidean time-depen…
Kernel transformations and bounds for smeared spectral functions
William I. Jay, Matteo Saccardi
This work develops a framework for transforming between smeared spectral functions computed using different smearing kernels. The kernel-transformation problem naturally arises whe…
The Causal Bootstrap: Bounding Smeared Spectral Functions from Non-Perturbative Euclidean Data
Ryan Abbott, Sarah Fields, William I. Jay +2
This work introduces the causal bootstrap, a framework for bounding smeared spectral observables from finite non-perturbative Euclidean data. The method optimizes over the convex s…
Spectral densities from Euclidean-time lattice correlation functions
Matteo Saccardi, Mattia Bruno, Leonardo Giusti
In quantum field theories, spectral densities are directly related to relevant physical observables. In Lattice QCD, their non-perturbative extraction from first principles require…
Spectral densities from Euclidean lattice correlators via the Mellin transform
Mattia Bruno, Leonardo Giusti, Matteo Saccardi
Spectral densities connect correlation functions computed in quantum field theory to observables measured in experiments. For strongly-interacting theories, their non-perturbative…
On the prediction of spectral densities from Lattice QCD
Mattia Bruno, Leonardo Giusti, Matteo Saccardi
Hadronic spectral densities play a pivotal role in particle physics, a prime example being the R-ratio defined from electron-positron scattering into hadrons. To predict them from…
Four-dimensional domain decomposition for the factorization of the fermion determinant
Matteo Saccardi, Leonardo Giusti
The non-local dependence of the fermion determinant on the gauge field limits our ability of simulating Quantum Chromodynamics on the lattice. Here we present a factorization of th…
Four-dimensional factorization of the fermion determinant in lattice QCD
Leonardo Giusti, Matteo Saccardi
In the last few years it has been proposed a one-dimensional factorization of the fermion determinant in lattice QCD with Wilson-type fermions that leads to a block-local action of…