Atomic Zitterbewegung

Details Atomic Zitterbewegung Atomic Zitterbewegung

2008-03-28

arxiv.org/abs/0803.4189v2

Physics

Quantum Physics

6 pages, 4 figures

Scientific paper

10.1209/0295-5075/83/54002

Ultra-cold atoms which are subject to ultra-relativistic dynamics are investigated. By using optically induced gauge potentials we show that the dynamics of the atoms is governed by a Dirac type equation. To illustrate this we study the trembling motion of the centre of mass for an effective two level system, historically called Zitterbewegung. Its origin is described in detail, where in particular the role of the finite width of the atomic wave packets is seen to induce a damping of both the centre of mass dynamics and the dynamics of the populations of the two levels.

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