A remark on helical waveguides

Details A remark on helical waveguides A remark on helical waveguides

2007-04-20

arxiv.org/abs/0704.2770v1

Physics

Quantum Physics

LaTeX, 12 pages

Scientific paper

10.1016/j.physleta.2007.05.013

Motivated by a proposal to create an optical helix-shaped waveguides for cold
atoms and molecules, we discuss local perturbations which can create bound
states in such a setting. This is known about a local slowdown of the twist; we
show that a similar effect can result from a local tube protrusion or a change
of the helix radius in correlation with its pitch angle.

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