Positronium Bose-Einstein condensation in liquid 4He bubbles
Abstract
A hollow spherical bubble containing thousands of spin-aligned triplet positronium (Ps) atoms in superfluid liquid 4He would be stable against breakup into smaller bubbles, and the Ps would form a Bose-Einstein condensate (BEC) with a number density of ∼1020cm-3 and a BEC critical temperature Tc≈300 K. Estimates suggest that one could make such bubbles in the laboratory containing 105 Ps atoms using presently known methods.
- Publication:
-
Physical Review A
- Pub Date:
- December 2019
- DOI:
- 10.1103/PhysRevA.100.063615
- Bibcode:
- 2019PhRvA.100f3615M