The pairing Hamiltonian for one pair of identical nucleons bound in a potential well

Details The pairing Hamiltonian for one pair of identical nucleons bound in a potential well The pairing Hamiltonian for one pair of identical nucleons bound in a potential well

2001-05-02

arxiv.org/abs/nucl-th/0105006v1

Phys.Rev. C64 (2001) 011302

Physics

Nuclear Physics

Nuclear Theory

5 pages, 1 postscript figure

Scientific paper

10.1103/PhysRevC.64.011302

The problem of one pair of identical nucleons sitting in ${\cal N}$ single particle levels of a potential well and interacting through the pairing force is treated introducing even Grassmann variables. The eigenvectors are analytically expressed solely in terms of these with coefficients fixed by the eigenvalues and the single particle energies. When the latter are those of an harmonic oscillator well an accurate expression is derived for both the collective eigenvalue and for those trapped in between the single particle levels, for any strength of the pairing interaction and for any number of levels. Notably the trapped solutions are labelled through an index upon which they depend parabolically.

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