Speaker
Francesca Argia Bresciani
(University of Milano-Bicocca)
Description
We present a general framework for quantifying finite-volume effects on smeared spectral densities and apply the result both formally and numerically to the vector-vector channel. Using two independent approaches — finite-volume corrections to Euclidean two-point functions and the Lellouch-Lüscher-Meyer formalism — we show that the leading dependence on the box size is exponentially suppressed and can be written universally in terms of the pion form factor, with both frameworks yielding an equivalent expression. We illustrate the consequences and the utility of the result with numerical estimates based on various smearing kernels and models of particle interactions.
Authors
Francesca Argia Bresciani
(University of Milano-Bicocca)
Mattia Bruno
(Università degli Studi di Milano - Bicocca)
Max Hansen