Pseudoscalar and vector correlations in instanton vacuum model

TL;DR

This paper demonstrates that considering quark interactions from the instanton medium allows for a unified description of pseudoscalar and low-lying vector meson states, using zero mode approximations.

Contribution

It introduces a method to describe both pseudoscalar and vector channels within the instanton vacuum model, emphasizing the role of zero modes.

Findings

Unified description of pseudoscalar and vector states achieved.

Quark interactions from instanton medium are crucial.

Calculations performed using zero mode approximation.

Abstract

It is shown, that the correct account of quark interaction generated by instanton medium gives the possibility of description on the same ground of both pseudoscalar channel and low lying bound states in the vector channel. It must be noted, that all calculations are made in the approximation, taking into account only zero modes.