Scalar-glueball-mediated scale-anomaly dominance of the confining pressure of the pion in holographic QCD

Abstract

In this work, we analyze the energy density and the stress distribution inside the pion derived from gravitational form factors in top-down holographic QCD. In particular, we show that the dominance of the scale anomaly in the confining pressure, previously observed in the instant form for the nucleon, also holds for the pion in the light-front form. Furthermore, we find that in large-$N_c$ QCD described by this approach, the scalar glueball plays a mediating role in transmitting the confining pressure. These findings support the universal role of the scale anomaly in the stability of hadrons.

12 pages, 3 figures

References in corpus (1)

• Scale-anomaly-induced binding pressure in hadrons

Cited by in corpus (2)

• Transverse energy-momentum tensor distributions in polarized nucleons
• Origin of the nucleon gravitational form factor $B_N(t)$: Exposition in light-front holographic QCD