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Transmission Phase of an Isolated Coulomb-Blockade Resonance

Hans A. Weidenmueller
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Abstract

In two recent papers, O. Entin-Wohlman et al. studied the question: ``Which physical information is carried by the transmission phase through a quantum dot?'' In the present paper, this question is answered for an islolated Coulomb-blockade resonance and within a theoretical model which is more closely patterned after the geometry of the actual experiment by Schuster et al. than is the model of O. Entin-Wohlman et al. We conclude that whenever the number of leads coupled to the Aharanov-Bohm interferometer is larger than two, and the total number of channels is sufficiently large, the transmission phase does reflect the Breit-Wigner behavior of the resonance phase shift.

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Hans A. Weidenmueller. 2002-02-12. Transmission Phase of an Isolated Coulomb-Blockade Resonance. https://doi.org/10.1103/physrevb.65.245322

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