Continuum shell model: From Ericson to conductance fluctuations

Details Continuum shell model: From Ericson to conductance fluctuations Continuum shell model: From Ericson to conductance fluctuations

2008-01-13

arxiv.org/abs/0801.1936v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 6 figures, corrected style and figures

Scientific paper

10.1063/1.2915620

We discuss an approach for studying the properties of mesoscopic systems, where discrete and continuum parts of the spectrum are equally important. The approach can be applied (i) to stable heavy nuclei and complex atoms near the continuum threshold, (ii) to nuclei far from the region of nuclear stability, both of the regions being of great current interest, and (iii) to mesoscopic devices with interacting electrons. The goal is to develop a new consistent version of the continuum shell model that simultaneously takes into account strong interaction between fermions and coupling to the continuum. Main attention is paid to the formation of compound resonances, their statistical properties, and correlations of the cross sections. We study the Ericson fluctuations of overlapping resonances and show that the continuum shell model nicely describes universal properties of the conductance fluctuations.

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