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arXiv · 1911.12718

Bose-Einstein condensate of alpha particles in the ground state of nuclear matter?

L. M. Satarov·M. I. Gorenstein·I. N. Mishustin·H. Stoecker
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Abstract

The phase diagram of isospin-symmetric chemically equilibrated mixture of alpha particles and nucleons is studied in the mean-field approximation. Skyrme-like parametrization is used for the mean-field potentials as functions of partial densities of nucleons and alphas. We find that there is a threshold value a* of the parameter a(N-alpha) which describes the attractive interaction between alpha-particles and nucleons. At a(N-alpha) a* the nuclear ground state includes also a nonzero fraction of alphas. We demonstrate that the equation of state of such alpha-N system includes both the first-order liquid-gas phase transitions and the Bose-Einstein condensation of alpha particles.

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L. M. Satarov, M. I. Gorenstein, I. N. Mishustin, H. Stoecker. 2019-11-28. Bose-Einstein condensate of alpha particles in the ground state of nuclear matter?. https://doi.org/10.1103/physrevc.101.024913

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