Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 16: Quantum Optics III
Q 16.7: Talk
Tuesday, March 24, 2015, 12:30–12:45, C/HSO
The semiclassical approximation in non-simply connected spaces — •Stefan G. Fischer1, Clemens Gneiting1, and Andreas Buchleitner1,2 — 1Physikalisches Institut, Albert-Ludwigs-Universität, Hermann-Herder-Str. 3, D-79104 Freiburg, Germany — 2Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität, Albertstr. 19, D-79104 Freiburg, Germany
When a quantum system is effectively confined to a two-dimensional plane, the exclusion of a singular point leads to interesting topological interference effects. The experimental framework is provided by subjecting particles to a vector potential in otherwise field-free space, as it is well known from the Aharonov-Bohm effect for a single particle, and leads to exchange interactions of identical particles other than those of bosons or fermions. We give a semiclassical description of such phenomena, in which interference effects can be intuitively related to the underlying structure of classical trajectories.