Speaker
Description
Recently, the gravitational form factors (GFFs) of the nucleon have been extensively studied both theoretically and experimentally, with the aim of deepening our understanding of its internal structure. However, many details remain unclear, especially the connection between the GFFs and the non-perturbative aspects of QCD.
In our study, we focus on the role of the scale anomaly in nucleon GFFs. To investigate this, we analyze the nucleon using the Skyrme model based on scale-invariant chiral perturbation theory, in which the pion and a scalar meson are introduced to capture the effects of the current quark mass and gluonic quantum contributions to the scale anomaly, respectively. In this talk, we will discuss how the scale anomaly influences the GFFs—particularly the D(t) form factor—and explore its impact on the stress distribution and internal forces inside the nucleon.