Quantum Phase Transitions in Dissipative Tunnel Junctions

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

Scientific paper

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10 pages, 11 figures

Scientific paper

10.1103/PhysRevB.68.165345

The Ueda-Guinea model of a dissipative tunnel junction is investigated. This model accounts for final state effects associated with single-electron tunneling. A quantum phase transition emerges, marking a boundary between insulating (Coulomb blockade) and conducting phases. The system is analyzed by large-N techniques, self-consistent harmonic approximation, and Monte Carlo methods.

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