Unified BCS-like model of pairing and alpha-correlations |
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| Authors: | R. A. Sen’kov V. G. Zelevinsky |
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| Affiliation: | 1.Physics Department,Central Michigan University,Mount Pleasant,USA;2.Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory,Michigan State University,East Lansing,USA |
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| Abstract: | We construct a BCS-like model that combines nucleonic pairing correlations and possible quartic correlations of alpha-type in a single variational wave function and derive corresponding gap equations. In the approximation of large logarithms typical for the BCS approach, we show that the system reveals two possible types of a condensate which cannot coexist. If the alpha-type condensate prevails at N = Z, the growth of the neutron excess will naturally lead to the first order phase transition to the nucleon condensates. |
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