Phase transitions in hot nuclear matter composed of nucleons and alpha-particles
Seminars
Seminar on Theory of hadronic matter under extreme conditions
Date and Time: Tuesday, 25 December 2018, at 2:30 PM
Venue: Blokhintsev Hall (4th floor), Bogoliubov Laboratory of Theoretical Physics
Seminar topic: “Phase transitions in hot nuclear matter composed of nucleons and alpha-particles”
Speaker: Igor N. Mishustin (NRC Kurchatov Institute, Moscow; FIAS, Frankfurt)
Abstract:
The finite-temperature equation of state of chemically-equilibrated mixture of alpha particles and nucleons is studied in the mean-field approximation. We use Skyrme-like parametrization of the mean-ашeld potentials as functions of partial particle densities, which contain both attractive and repulsive terms. The phase diagram of the alpha-nucleon mixture is studied with special attention to possible phase transitions. We have found two first-order phase transitions of liquid-gas type, stable and metastable, which differ significantly by the fractions of alpha particles. It is shown that alpha particles can also form a Bose condensate, but this state is metastable.