Quark-meson coupling model with the cloudy bag

TL;DR

This paper extends the quark-meson coupling model with the cloudy bag framework to incorporate pion and gluon effects, providing improved descriptions of nuclear matter properties and connecting to effective field theory approaches.

Contribution

It introduces an extended model that includes pion-cloud and gluon exchange effects within the cloudy bag framework, enhancing the understanding of nuclear matter.

Findings

The extended model accurately describes nuclear matter properties.

Inclusion of pion-cloud effects improves the model's realism.

The relationship between the model and EFT approaches is clarified.

Abstract

Using the volume coupling version of the cloudy bag model, the quark-meson coupling model is extended to study the role of pion field and the properties of nuclear matter. The extended model includes the effect of gluon exchange as well as the pion-cloud effect, and provides a good description of the nuclear matter properties. The relationship between the extended model and the EFT approach to nuclear matter is also discussed.