Quantum phase transitions in dissipative tunnel junctions

@article{Drewes2003QuantumPT,
  title={Quantum phase transitions in dissipative tunnel junctions},
  author={S. Drewes and Daniel P. Arovas and Scot R. Renn},
  journal={Physical Review B},
  year={2003},
  volume={68}
}
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 betweeninsulating (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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6 Citations

6 Citations

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TLDR
The effective conductance of an ultrasmall tunnel junction is calculated from the functional-integral description beyond the weak-coupling limit by employing the self-consistent harmonic approximation, and results indicate a possibility of a precipitous transition for ${R}_{N}$ of the order of $\frac{\ensuremath{\hbar}}{{e}^{2}}$.