# Gluon contribution to the mechanical properties of a dressed quark in light-front Hamiltonian QCD

## TL;DR

This paper calculates how gluons influence the mechanical and gravitational properties of a dressed quark using light-front Hamiltonian QCD, revealing their role in internal distributions and form factors.

## Contribution

It provides a detailed analysis of gluon contributions to gravitational form factors and mechanical properties in a simple dressed quark model within light-front QCD.

## Key findings

- Gluons significantly affect the gravitational form factors of a dressed quark.
- Gluon contributions alter the pressure, shear, and energy distributions inside the quark.
- The study offers insights into the internal structure of hadrons in QCD.

## Abstract

We calculate the contribution to the gravitational form factors (GFFs) from the gluon part of the energy-momentum tensor in QCD. We take a simple spin $1/2$ composite state, namely a quark dressed with a gluon. We use the light-front Hamiltonian QCD approach in the light-front gauge. We also present the effect of the gluon on the mechanical properties like the pressure, shear and energy distributions of the dressed quark state.