Momentum Distribution in Nuclear matter within a Perturbation Approximation

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dc.creatorMariano, A.
dc.creatorKrmpotic, F.
dc.creatorPiza, A. F. R de Toledo
dc.date1995-12-29
dc.date.accessioned2026-07-07T11:15:36Z
dc.date.available2026-07-07T11:15:36Z
dc.descriptionIt is shown that the norm corrections, introduced to avoid the violation of the constraints on the depletion of the hole states in the standard perturbative 2p2h approach, leads in nuclear matter to a dependence of the momentum distribution with the total nucleon number. This unphysical behavior, which in turn makes the depletion to be non-extensive, arises from contributions of disconnected diagrams contained in the norm. It is found that the extensivity is again recovered when the 4p4h excitations in the ground state are included, and a reasonable value for the total number of nucleons promoted above the Fermi level is obtained.
dc.description11 pages, LaTeX, 5 figures, figures 1 to 3 included in the latex file, postscript files of figures 4 and 5 available from the Authors. Accepted for publication in Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/nucl-th/9512042
dc.identifierhttp://arxiv.org/abs/nucl-th/9512042
dc.identifierPhys.Rev.C53:1664-1669,1996
dc.identifierdoi:10.1103/PhysRevC.53.1664
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192439
dc.subjectNuclear Theory
dc.titleMomentum Distribution in Nuclear matter within a Perturbation Approximation
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