Speaker
Sarah Fields
(Columbia University)
Description
The calculation of inclusive observables remains a significant challenge for lattice QCD, where the inverse problem of relating Euclidean-space data to real-time, multi-particle processes is inherently ill-posed. This work further develops a potential first-principles solution to this inverse problem which uses Nevanlinna-Pick interpolation to determine inclusive decay rates from uncertain data. Here we present a method that begins with uncertain Euclidean space-time correlation function data, which are then Laplace transformed with $O(a^2)$ discretization errors, followed by the Nevanlinna-Pick interpolation described above.
Authors
Sarah Fields
(Columbia University)
Norman Christ
(Columbia University)