Monopoles and hadron spectrum in quenched QCD

TL;DR

This study investigates the hadron spectrum in quenched SU(3) QCD with abelian and monopole gauge fields, finding that abelian fields replicate the full theory's chiral limit, while monopole effects require further analysis.

Contribution

It provides preliminary insights into how abelian and monopole gauge fields influence the hadron spectrum in quenched QCD, highlighting the need for more data on monopole backgrounds.

Findings

Abelian gauge fields reproduce the same chiral limit as the full theory.

Photon contributions do not produce a mass gap at the critical hopping parameter.

Further analysis is needed for monopole background effects.

Abstract

We report the preliminary results of the studies of hadron spectrum under the background of abelian and monopole gauge fields in quenched Wilson SU(3) QCD. Abelian gauge fields alone reproduce the same chiral limit as in the full case. Critical hopping parameter $\kappa_c$ and $m_{\rho}$ are the same in both cases. We need more time to get a definite result in the case of monopole background. The photon contribution do not produce any mass gap in the chiral limit ($\kappa=\kappa_c\sim 0.17$). The behavior is similar to those in the free photon case for $\kappa_c= 0.125$.