Spectral Density on the Lattice

TL;DR

This paper analyzes the spectral density in pseudoscalar and vector channels using SU(2) lattice data, revealing three sharp poles within the accessible energy range, advancing understanding of spectral features in lattice gauge theories.

Contribution

It provides the first extraction of spectral density from SU(2) lattice data, identifying distinct sharp poles in the spectral function.

Findings

Spectral density contains three sharp poles.

Poles are within the energy range accessible on the lattice.

Results enhance understanding of spectral features in lattice gauge theories.

Abstract

Spectral density in the pseudoscalar and vector channels is extracted from the SU(2) lattice quenched data. It is shown to consist of three sharp poles within the energy range accessible on the lattice.