Bose-Einstein condensation of rotons
Abstract
Bose-Einstein condensation of rotons in helium was considered long ago. It was shown that the relative velocity of the normal motion in this state must be equal to the Landau critical velocity. We argue that the condensation can be attained at a smaller velocity if the temperature is low enough.
- Publication:
-
Physical Review B
- Pub Date:
- July 2011
- DOI:
- arXiv:
- arXiv:1009.4114
- Bibcode:
- 2011PhRvB..84b4525M
- Keywords:
-
- 67.25.dt;
- 67.85.Jk;
- 67.25.du;
- Sound and excitations;
- Other Bose-Einstein condensation phenomena;
- Relaxation phenomena;
- Condensed Matter - Other Condensed Matter;
- Condensed Matter - Quantum Gases
- E-Print:
- 9 pages, number decay exponet corrected, references added, minor fixes