Flux Tubes of Two- and Three-Quark System in Full QCD

TL;DR

This study investigates the structure of flux tubes in two- and three-quark systems within full QCD, revealing similarities to quenched QCD and supporting the Y-shaped flux configuration in three-quark systems.

Contribution

It provides new insights into the flux tube profiles in full QCD, including the monopole and photon components, and supports the Y ansatz for three-quark systems.

Findings

Flux tubes in full QCD resemble those in quenched QCD up to 2fm separation.

The three-quark flux profile supports the Y-shaped configuration.

Splitting the gauge field reveals monopole and photon contributions to the flux.

Abstract

We study the abelian color flux of two- and three-quark systems in the maximally abelian gauge in lattice QCD with dynamical fermions. We find that the abelian flux tube formed between quark and antiquark is very much the same as in quenched QCD up to quark separations of $R$$\sim$ 2fm. The profile of the color electric field in three-quark system suggests $Y$ ansatz, which might be interpreted as the result of the vacuum pressure in the confined phase. In order to clarify the flux structure, we investigate the color electric field of the three-quark system splittting the abelian gauge field into the monopole and photon parts.