1S-2S spectrum of a hydrogen Bose-Einstein condensate
Abstract
We calculate the two-photon 1S-2S spectrum of an atomic hydrogen Bose-Einstein condensate in the regime where the cold collision frequency shift dominates the line shape. Wentzel-Kramers-Brillouin and static phase approximations are made to find the intensities for transitions from the condensate to motional eigenstates for 2S atoms. The excited-state wave functions are found using a mean field potential, which includes the effects of collisions with condensate atoms. Results agree well with experimental data. This formalism can be used to find condensate spectra for a wide range of excitation schemes.
- Publication:
-
Physical Review A
- Pub Date:
- March 2000
- DOI:
- 10.1103/PhysRevA.61.033611
- arXiv:
- arXiv:physics/9908002
- Bibcode:
- 2000PhRvA..61c3611K
- Keywords:
-
- 03.75.Fi;
- 32.70.Jz;
- 05.30.Jp;
- 34.50.-s;
- Line shapes widths and shifts;
- Boson systems;
- Scattering of atoms and molecules;
- Physics - Atomic Physics
- E-Print:
- 13 pages, 4 figures