Journal
EPL
Volume 83, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/83/54002
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Funding
- Royal Society of Edinburgh
- UK EPSRC
- Engineering and Physical Sciences Research Council [EP/E047084/1] Funding Source: researchfish
- EPSRC [EP/E047084/1] Funding Source: UKRI
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Ultracold 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. Copyright (c) EPLA, 2008.
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