Phase diagram of the selfinteracting particle­-antiparticle boson system

  • D. Anchishkin Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
  • V. Gnatovskyy Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
  • D. Zhuravel Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
  • V. Karpenko Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
Keywords: relativistic bosonic system, Bose-Einstein condensation, strong interaction

Abstract

A system of interacting relativistic bosons at finite temperatures and isospin densities is studied within the framework of the Skyrme­like mean­field model. The mean field contains both attractive and repulsive terms. The consideration is taken within the framework of the Canonical Ensemble and the isospin­density dependencies of thermodynamic quantities is obtained, in particular as the phase diagrams. It is shown that in such a system, in addition to the formation of a Bose­Einstein condensate, a liquid­gas phase transition is possible. We prove that the multi­boson system develops the Bose condensate for particles of high­density component only.

Published
2021-09-07
Section
Articles