Adding omega vector repulsion to the quark-meson soliton model increases nucleon mass and radius and reduces the energy gap to three free quarks, signaling instability.
Nuclear matter in the chiral quark soliton model with vector mesons
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We study the nuclear matter solution in the chiral quark soliton model coupled to $\rho$ and $\omega$ vector mesons based on the Wigner-Seitz approximation. It is shown that the vector mesons stabilize the soliton at high-density region. As a result, the saturation property and incompressibility are significantly improved.
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The nucleon properties in finite temperature and density with vector meson
Adding omega vector repulsion to the quark-meson soliton model increases nucleon mass and radius and reduces the energy gap to three free quarks, signaling instability.