07-96 Pavel Exner and Martin Fraas
A remark on helical waveguides (31K, LaTeX) Apr 20, 07
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Abstract. 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.

Files: 07-96.src( 07-96.keywords , HelWaveguide6.tex )