Many-path interference and topologically suppressed tunneling

S. Weigert; I. Herger

doi:10.1209/epl/i1998-00293-9

Many-path interference and topologically suppressed tunneling

S. Weigert, I. Herger

Mathematics

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	599-604
Number of pages	5
Journal	Europhysics Letters
Volume	42
Issue number	6
DOIs	https://doi.org/10.1209/epl/i1998-00293-9
Publication status	Published - 15 Jun 1998

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title = "Many-path interference and topologically suppressed tunneling",

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.",

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AB - 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.

U2 - 10.1209/epl/i1998-00293-9

DO - 10.1209/epl/i1998-00293-9

M3 - Article

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