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We have calculated the proton spectral functions in finite nuclei based onthe local density approximation where the properties of finite nuclei andnuclear matter are calculated by the Skyrme-Hartree-Fock method and theextended Brueckner-Hartree-Fock approach, respectively. The scaled spectralfunction from our calculation is in good agreement with experimental results atsmall momenta while the difference between them becomes apparent at highmomenta. Besides, a target dependence of the scaled proton spectral function isalso obtained in our calculation as was observed in experiment. A furtherinvestigation indicates that the proportion of the high density region of theproton has a significant contribution to this target-dependent behavior sincethe spectral function in asymmetric nuclear matter increases significantly as afunction of density.

Proton spectral functions in finite nuclei based on the extended Brueckner-Hartree-Fock approach