Abstract
To gain a true appreciation of how extraordinary many of the properties of the atomic-trap Bose-Einstein condensates (BEC’s) [1] are, we only have to remind ourselves of their dilute gas nature. As such, the fact that their dynamics is extremely sensitive to the inter-particle interactions is remarkable, for instance. Since these BEC’s are amenable to atomic and optical techniques that can modify the inter-atomic interactions [2], it is also a relevant remark. In this paper, we discuss one of the proposed schemes: the magnetically controlled low energy Feshbach resonance. Near resonance, a magnetic field variation alters the detuning and, hence, the binary atom interactions. The response of the condensate to sudden changes of the inter-particle interaction is macroscopic [3] and the experimentalist who can control it is insured of performing interesting dynamical BEC-experiments. This prospect motivated a great deal of research, both in theory [4]- [5] and experiment [6].
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Timmermans, E. (2001). The BEC Near a Feshbach Resonance: A Superfluid of Mutually Coherent Condensates. In: Carmichael, H.J., Glauber, R.J., Scully, M.O. (eds) Directions in Quantum Optics. Lecture Notes in Physics, vol 561. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-40894-0_6
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DOI: https://doi.org/10.1007/3-540-40894-0_6
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