Average shot-noise power via a diagrammatic method

In this work we use a diagrammatic method for integration over the unitary group to obtain a quantum correction to the average shot-noise power of a chaotic cavity with non-ideal contacts. We present maximally crossed diagrams representing the physical modes of the system responsible for the dominan...

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Bibliographic Details
Published in:Journal of physics. A, Mathematical and theoretical Mathematical and theoretical, 2010-02, Vol.43 (7), p.075101-075101
Main Authors: Barbosa, A L R, Ramos, J G G S, Macêdo, A M S
Format: Article
Language:English
Subjects:
Chaos theory
Exact sciences and technology
Holes
Mathematical analysis
Physics
Symmetry
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Summary:In this work we use a diagrammatic method for integration over the unitary group to obtain a quantum correction to the average shot-noise power of a chaotic cavity with non-ideal contacts. We present maximally crossed diagrams representing the physical modes of the system responsible for the dominant quantum correction. We demonstrate with explicit calculations that the suppression--amplification effect reported in Ramos et al (2008 Phys. Rev. B 78 235305) occurs both for systems in the presence of time-reversal (TR) and spin-rotation (SR) symmetries and for systems with broken SR symmetry but in the presence of TR symmetry.
ISSN:1751-8121
1751-8113
1751-8121
DOI:10.1088/1751-8113/43/7/075101