Energy–momentum tensor form factors of the nucleon within a π–ρ–ω soliton model

We investigate the energy–momentum tensor form factors (FFs) of the nucleon within the framework of a chiral soliton model, including the ρ and ω vector mesons. We examine the role of each meson degrees of freedom in these FFs. It is explicitly shown that the pion provides strong attraction whereas the ρ and ω yield repulsion in such a way that the soliton becomes stabilized. The results are discussed in comparison with those of other models. (paper)