Dynamic Critical Phenomena in Trapped Bose Gases

Details Dynamic Critical Phenomena in Trapped Bose Gases Dynamic Critical Phenomena in Trapped Bose Gases

2001-08-30

arxiv.org/abs/cond-mat/0108508v1

Proc. Int. Soc. Opt. Eng. 4243 (2001) 150-155

Physics

Condensed Matter

Latex file, 7 pages, no figures

Scientific paper

Nonlinear dynamics of a trapped Bose-Einstein condensate, subject to the action of a resonant external field, is studied. This field produces a spatio-temporal modulation of the trapping potential with the frequency close to the transition frequency between the ground state and a higher energy level. The evolution equations of fractional populations display a kind of critical phenomena at a critical line on the manifold of the system parameters. It is demonstrated that there exists a direct analogy between dynamical instability at this line and critical phenomena at a critical line of a related averaged system.

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