The unpolarized spin-flip isoscalar generalized parton distribution function (E u + E d )(x, ξ, t) is studied in the large-Nc limit at a low normalization point in the framework of the chiral quarksoliton model. This is the first study of generalized parton distribution functions in this model, which appear only at the subleading order in the large-Nc limit. Particular emphasis is put therefore on the demonstration of the theoretical consistency of the approach. The forward limit of (E u + E d )(x, ξ, t) of which only the first moment -the anomalous isoscalar magnetic moment of the nucleon -is known phenomenologically, is computed numerically. Observables sensitive to (E u + E d )(x, ξ, t) are discussed.
The dependence of the nucleon mass on the mass of the pion is studied in the framework of the chiral quark-soliton model. A remarkable agreement is observed with lattice data from recent full dynamical simulations. The possibility and limitations to use the results from the chiral quark soliton model as a guideline for the chiral extrapolation of lattice data are discussed.
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