| Autor: |
Knoop, S., Borbely, J. S., Vassen, W., Kokkelmans, S. J. J. M. F. |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Phys. Rev. A 86, 062705 (2012) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevA.86.062705 |
| Popis: |
We have analyzed our recently-measured three-body loss rate coefficient for a Bose-Einstein condensate of spin-polarized metastable triplet 4He atoms in terms of Efimov physics. The large value of the scattering length for these atoms, which provides access to the Efimov regime, arises from a nearby potential resonance. We find the loss coefficient to be consistent with the three-body parameter (3BP) found in alkali-metal experiments, where Feshbach resonances are used to tune the interaction. This provides new evidence for a universal 3BP, the first outside the group of alkali-metal elements. In addition, we give examples of other atomic systems without Feshbach resonances but with a large scattering length that would be interesting to analyze once precise measurements of three-body loss are available. |
| Databáze: |
arXiv |
| Externí odkaz: |
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