The α-particle in nuclear matter

Among the light nuclear clusters the α-particle is by far the strongest bound system and therefore expected to play a significant role in the dynamics of nuclei and the phases of nuclear matter. To systematically study the properties of the α-particle we have derived an effective four-body equation...

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Bibliographic Details
Published in:Physics letters. B 2000-09, Vol.488 (3), p.247-253
Main Authors: Beyer, M, Sofianos, S.A, Kuhrts, C, Röpke, G, Schuck, P
Format: Article
Language:English
Subjects:
Correlations
Four-body equations
Nuclear matter
Nuclear Theory
Physics
α-particle
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Summary:Among the light nuclear clusters the α-particle is by far the strongest bound system and therefore expected to play a significant role in the dynamics of nuclei and the phases of nuclear matter. To systematically study the properties of the α-particle we have derived an effective four-body equation of the Alt–Grassberger–Sandhas (AGS) type that includes the dominant medium effects, i.e. self energy corrections and Pauli-blocking in a consistent way. The equation is solved utilizing the energy dependent pole expansion for the subsystem amplitudes. We find that the Mott transition of an α-particle at rest differs from that expected from perturbation theory and occurs at approximately 1/10 of nuclear matter densities.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(00)00908-4