ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We calculate the ground-state energy of normal and spin-polarized3He within a model-space ring diagram framework where the particle-particle hole-hole (pphh) ring diagrams of the ground-state energy shift are summed up to all orders. The Aziz HFDHE2 and HFD-B(HE) interactions are employed. We first calculate a model space reaction matrix(G M ) whose intermediate states are required to be outside the chosen model space. The pphh ring diagrams withG M -matrix vertices are then summed within the model space by way of a PRA-type secular equation. The continuous single-particle spectrum of Mahaux is chosen in the present work. It is found that the inclusion of the pphh ring diagrams gives a significant increase in the binding energy per particle(BE/A) as compared with Brueckner-Hartree-Fock calculations. For normal and spin-polarized3He our calculated values forBE/A and saturation densities are respectively (1.86 K, 0.72 Å−1) and (1.59 K, 0.91 Å−1), while the corresponding experimental values for normal3He are (2.47 K, 0.785 Å−1).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00683505
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