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Many-path interference and topologically suppressed tunneling

Weigert, S. and Herger, I. (1998) Many-path interference and topologically suppressed tunneling. Europhysics Letters. pp. 599-604. ISSN 0295-5075

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Abstract

Quantum interference is studied for a charged particle on a multiply connected configuration space. The holes of the space are assumed to accommodate independent magnetic fluxes. As follows from an instanton calculation, tunneling of the particle is suppressed completely in such a geometry for appropriately chosen field strengths. This set of values defines an algebraic variety in parameter space, not a manifold. The quenching persists even if the geometric symmetry of the system is broken. Aharonov-Bohm-type experiments and mesoscopic tunneling devices are natural candidates to observe many-path interference.

Item Type: Article
Copyright, Publisher and Additional Information: © 1998 EDP Sciences. Reproduced in accordance with the publisher's self-archiving policy.
Academic Units: The University of York > Mathematics (York)
Depositing User: Repository Officer
Date Deposited: 08 Feb 2007
Last Modified: 17 Oct 2013 14:40
Published Version: http://dx.doi.org/10.1209/epl/i1998-00293-9
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/1373

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