Combinatorial theory of the semiclassical evaluation of transport moments II: Algorithmic approach for moment generating functions

Berkolaiko, G. and Kuipers, J. (2013) Combinatorial theory of the semiclassical evaluation of transport moments II: Algorithmic approach for moment generating functions. JOURNAL OF MATHEMATICAL PHYSICS, 54 (12): 123505. ISSN 0022-2488, 1089-7658

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Abstract

Electronic transport through chaotic quantum dots exhibits universal behaviour which can be understood through the semiclassical approximation. Within the approximation, calculation of transport moments reduces to codifying classical correlations between scattering trajectories. These can be represented as ribbon graphs and we develop an algorithmic combinatorial method to generate all such graphs with a given genus. This provides an expansion of the linear transport moments for systems both with and without time reversal symmetry. The computational implementation is then able to progress several orders further than previous semiclassical formulae as well as those derived from an asymptotic expansion of random matrix results. The patterns observed also suggest a general form for the higher orders. (C) 2013 AIP Publishing LLC.

Item Type: Article
Uncontrolled Keywords: CHAOTIC QUANTUM TRANSPORT; LOCALIZED SCATTERERS; INTEGRABLE BILLIARDS; METALLIC CONDUCTION; SPATIAL VARIATION; UNITARY-GROUP; MATRIX THEORY; CAVITIES; SURFACES; CURRENTS;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Depositing User: Dr. Gernot Deinzer
Date Deposited: 24 Mar 2020 11:10
Last Modified: 24 Mar 2020 11:10
URI: https://pred.uni-regensburg.de/id/eprint/15562

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