Bose condensation of particle-antiparticle systems
We discuss some important papers that have appeared in the last twenty years on the possibility of Bose condensation in particle-antiparticle systems. Electron-hole systems in some semiconductors provide the background for a non-relativistic treatment. Bose condensation and the superfluid phase of the electron-hole fluid are strongly favoured. Next, pairing and the appearance of the superfluid vacuum state in fermion-antifermion system are considered from a relativistic viewpoint. Special attention is given to the pairs in the stateJP=0+. The pairing in the fundamental fermion-antifermion sea may provide the background subquantal level of reality of the universe.
Volume 96, 2022
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