Abstract
Cluster formation and condensation in low density nuclear matter is investigated. It is demonstrated how the BCS wave function continously goes from a Bose condensate of deuterons at very low densities to a condensate of Cooper pairs at higher densities. At low densities a strong competition with α-particle condensation exists. At very low densities α-particles win but at higher densities they loose against n-p Cooper pairing. Simple arguments for this phenomenon are given. At low densities nuclear pairing is very strong (Δ/ε F ∼ 10−1). Approaching the critical temperature from above it is shown how in the single particle density of states progressively a depression, the so-called pseudo gap, appears.
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Schuck, P., Schnell, A., Röpke, G., Nozières, P. (1999). Deuteron Versus α-Particle Condensation and Precritical Pair Fluctuations in Low Density Nuclear Matter. In: Blaizot, JP., Campi, X., Ploszajczak, M. (eds) Nuclear Matter in Different Phases and Transitions. Fundamental Theories of Physics, vol 95. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4556-5_18
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DOI: https://doi.org/10.1007/978-94-011-4556-5_18
Publisher Name: Springer, Dordrecht
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