Pion wave function from the instanton vacuum model

TL;DR

This paper calculates the pion wave function using an instanton vacuum model, finding results that closely match the expected asymptotic form, thus providing insights into non-perturbative QCD effects.

Contribution

It introduces a method to compute the pion wave function within the instanton vacuum framework, connecting low-energy effective theory with known asymptotic behavior.

Findings

Pion wave function computed numerically.

Results are close to the asymptotic wave function.

Supports the validity of the instanton vacuum model in describing pion structure.

Abstract

The pion wave function is computed in the low energy effective theory inspired by the instanton vacuum model. The resultat is numerically rather close to the asymptotical wave function.