Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-09-09
Phys.Lett.B682:33-39,2009
Physics
Nuclear Physics
Nuclear Theory
16 pages, 6 figures
Scientific paper
10.1016/j.physletb.2009.10.070
The ground state energy of ideal alpha-matter at T=0 is analyzed within the framework of variational theory of Bose quantum liquids. Calculations are done for three local alpha-alpha potentials with positive volume integrals and two-body correlation functions obtained from the Pandharipande-Bethe equation. The energy per particle of $\alp$ matter is evaluated in the cluster expansion formalism up to four-body diagrams, and using the HNC/0 and HNC/4 approximation for a Bose liquid. Inclusion of higher order terms in the cluster expansion of the condensate fraction are leading to a stronger depletion of the alpha condensate with the density compared to the two-body approximation prediction.
Carstoiu Florin
Misicu Serban
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