Data di Pubblicazione:
2004
Citazione:
Many-body effects in nuclear structure / F. Barranco, R. A. Broglia, G. Colo', G. Gori,
E. Vigezzi, P. F. Bortignon. - In: THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI. - ISSN 1434-6001. - 21:1(2004 Jul 06), pp. 57-60. [10.1140/epja/i2003-10185-0]
Abstract:
We calculate, for the first time, the state-dependent pairing gap of a finite nucleus (120Sn)
diagonalizing the bare nucleon-nucleon potential (Argonne v14) in a Hartree-Fock basis (with effective
k-mass mk ≈ 0.7m), within the framework of the generalized Bogoliubov-Valatin approximation including
scattering states up to 800 MeV above the Fermi energy to achieve convergence. The resulting gap accounts
for about half of the experimental gap. The combined effect of the bare nucleon-nucleon potential and of
the induced pairing interaction arising from the exchange of low-lying surface vibrations between nucleons
moving in time-reversal states close to the Fermi energy accounts for the experimental gap.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Hartree-Fock ; random phase approximations
Elenco autori:
F. Barranco, R.A. Broglia, G. Colo', G. Gori, E. Vigezzi, P.F. Bortignon
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