Dilute Bose-Einstein condensate with large scattering length.
Publication
, Journal Article
Braaten, E; Hammer, H-W; Mehen, T
Published in: Physical review letters
January 2002
We study a dilute Bose gas of atoms whose scattering length a is large compared to the range of their interaction. We calculate the energy density E of a homogeneous Bose-Einstein condensate (BEC) to second order in the low-density expansion, expressing it in terms of a and a second parameter Lambda* that determines the low-energy observables in the three-body sector. The second-order correction to E has a small imaginary part that reflects the instability due to three-body recombination. In the case of a trapped BEC with large negative a, we calculate the coefficient of the three-body mean-field term in E in terms of a and Lambda*. It can be very large if there is an Efimov state near threshold.
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Published In
Physical review letters
DOI
EISSN
1079-7114
ISSN
0031-9007
Publication Date
January 2002
Volume
88
Issue
4
Start / End Page
040401
Related Subject Headings
- General Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences
Citation
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Braaten, E., Hammer, H.-W., & Mehen, T. (2002). Dilute Bose-Einstein condensate with large scattering length. Physical Review Letters, 88(4), 040401. https://doi.org/10.1103/physrevlett.88.040401
Braaten, Eric, H. -. W. Hammer, and Thomas Mehen. “Dilute Bose-Einstein condensate with large scattering length.” Physical Review Letters 88, no. 4 (January 2002): 040401. https://doi.org/10.1103/physrevlett.88.040401.
Braaten E, Hammer H-W, Mehen T. Dilute Bose-Einstein condensate with large scattering length. Physical review letters. 2002 Jan;88(4):040401.
Braaten, Eric, et al. “Dilute Bose-Einstein condensate with large scattering length.” Physical Review Letters, vol. 88, no. 4, Jan. 2002, p. 040401. Epmc, doi:10.1103/physrevlett.88.040401.
Braaten E, Hammer H-W, Mehen T. Dilute Bose-Einstein condensate with large scattering length. Physical review letters. 2002 Jan;88(4):040401.
Published In
Physical review letters
DOI
EISSN
1079-7114
ISSN
0031-9007
Publication Date
January 2002
Volume
88
Issue
4
Start / End Page
040401
Related Subject Headings
- General Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences