Staggered repulsion of transmission eigenvalues in symmetric open mesoscopic systems.

Kopp, Marten and Schomerus, Henning and Rotter, Stefan (2008) Staggered repulsion of transmission eigenvalues in symmetric open mesoscopic systems. Physical review B, 78. 075312. ISSN 1550-235X

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Abstract

Quantum systems with discrete symmetries can usually be desymmetrized, but this strategy fails when considering transport in open systems with a symmetry that maps different openings onto each other. We investigate the joint probability density of transmission eigenvalues for such systems in random-matrix theory. In the orthogonal symmetry class we show that the eigenvalue statistics manifests level repulsion only between every second transmission eigenvalue. This finds its natural statistical interpretation as a staggered superposition of two eigenvalue sequences. For a large number of channels, the statistics for a system with a lead-transposing symmetry approaches that of a superposition of two uncorrelated sets of eigenvalues as in systems with a lead-preserving symmetry (which can be desymmetrized). These predictions are confirmed by numerical computations of the transmission-eigenvalue spacing distribution for quantum billiards and for the open kicked rotator.

Item Type: Journal Article
Journal or Publication Title: Physical review B
Additional Information: © 2008 American Physical Society
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 19750
Deposited By: Dr Henning Schomerus
Deposited On: 06 Nov 2008 16:28
Refereed?: Yes
Published?: Published
Last Modified: 19 Aug 2019 00:20
URI: https://eprints.lancs.ac.uk/id/eprint/19750

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