Gravitational form factors of pion from top-down holographic QCD

TL;DR

This paper calculates the gravitational form factors of pions using a top-down holographic QCD model, revealing insights into hadron internal stress distributions and glueball dominance in gravitational interactions.

Contribution

It provides the first momentum transfer dependent GFFs of pions from a top-down holographic approach, including the D-term and glueball dominance observation.

Findings

Calculated pion GFFs with momentum transfer dependence.

Obtained the D-term value in the forward limit.

Identified glueball dominance in gravitational interactions.

Abstract

The gravitational form factors (GFFs) of pions are calculated from a top-down holographic quantum chromodynamics (QCD) approach with momentum transfer dependence for the first time. It is important because the GFFs of hadrons have information on the internal stress distribution that may provide insight into the mechanism of how QCD forms hadrons. The forward limit value of this GFFs, i.e. the D-term, was also obtained. Furthermore, in this approach, we observe the so-called glueball dominance, in which pions have gravitational interactions via infinite glueball spectra.