منابع مشابه
Quartet condensation and isovector pairing correlations in N = Z nuclei
We propose a simple quartet condensationmodel (QCM)which describes with very high accuracy the isovector pairing correlations in self-conjugate nuclei. The quartets have an α-like structure and are formed by collective isovector pairs. The accuracy of the QCM is tested forN = Z nuclei for which exact shell model diagonalizations can be performed. The calculations are done with two isovector pai...
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A systematic investigation of the rotating N = Z even-even nuclei in the mass A = 58 − 80 region has been performed within the frameworks of the Cranked Relativistic Mean field, Cranked Relativistic Hartree Bogoliubov theories and cranked Nilsson-Strutinsky approach. Most of the experimental data is well accounted for in the calculations. The present study suggests that there is strong isovecto...
متن کاملIsovector pairing in odd-A proton-rich nuclei
A simple model based on the group SO(5) suggests that both the likeparticle and neutron-proton components of isovector pairing correlations in odd-A nuclei are Pauli blocked. The same effect emerges from Monte Carlo Shell-model calculations of proton-rich nuclei in the full fp shell. There are small differences between the two models in their representation of the effects of an odd nucleon on t...
متن کاملExact solution of the isovector neutron-proton pairing Hamiltonian.
The complete exact solution of the T = 1 neutron-proton pairing Hamiltonian is presented in the context of the SO(5) Richardson-Gaudin model with nondegenerate single-particle levels and including isospin symmetry-breaking terms. The power of the method is illustrated with a numerical calculation for for 64Ge for a pf + g9/2 model space which is out of reach of modern shell-model codes.
متن کاملIsovector neutron-proton pairing with particle number projected BCS
The particle number projected BCS (PBCS) approximation is tested against the exact solution of the SO(5) Richardson-Gaudin model for isovector pairing in a system of nondegenerate single-particle orbits. Two isovector PBCS wave functions are considered. One is constructed as a single proton-neutron pair condensate; the other corresponds to a product of a neutron pair condensate and a proton pai...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2002
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(01)01426-5