Speculations on Bose-Einstein Condensation and Quantum Crystals
Abstract
It is shown, by almost rigorous arguments, that there exist many-body states of a system of interacting bosons which exhibit both crystalline order and Bose-Einstein condensation into the zero-momentum eigenstate of the single-particle density matrix. The implications of this result are discussed in relation to theories of superfluidity and the nature of quantum crystals.
- Publication:
-
Physical Review A
- Pub Date:
- July 1970
- DOI:
- 10.1103/PhysRevA.2.256
- Bibcode:
- 1970PhRvA...2..256C