Interaction-Induced Quantum Dephasing in Mesoscopic Rings

Abstract

Combining nonperturbative techniques with Monte Carlo simulations we demonstrate that quantum coherence effects for a particle on a ring are suppressed beyond a finite length $L_{\varphi }$ even at zero temperature if the particle is coupled to a diffusive electron gas by means of long range Coulomb interaction. This length is consistent with $L_{\varphi }$ derived from weak-localization-type of analysis.

4 revtex pages, 2 figures

References in corpus (2)

• Aharonov-Bohm oscillations of a particle coupled to dissipative environments
• Aharonov-Bohm ring with fluctuating flux

Cited by in corpus (22)

• Superconductivity in one dimension
• Entanglement Energetics at Zero Temperature
• Decoherence in weak localization I: Pauli principle in influence functional
• Ground State Entanglement Energetics
• Metal-Insulator-Transition in a Weakly interacting Disordered Electron System
• Persistent currents in multicomponent Tomonaga-Luttinger liquid: application to mesoscopic semiconductor ring with spin-orbit interaction
• Rings and boxes in dissipative environments
• Interference in presence of Dissipation
• Influence Functional for Decoherence of Interacting Electrons in Disordered Conductors
• Particle renormalizations in presence of dissipative environments
• Persistent current noise and electron-electron interactions
• Decoherence of a particle in a ring
• Persistent currents in nanorings and quantum decoherence by Coulomb interaction
• Dephasing of a particle in a dissipative environment
• Fluctuations of persistent current
• Renormalization of the dephasing by zero point fluctuations
• Rings and Coulomb boxes in dissipative environments
• Two-instanton approximation to the Coulomb blockade problem
• On the macroscopic quantization in mesoscopic rings and single-electron devices
• Persistent current noise
• Two-particle excitations under coexisting electron interaction and disorder
• Persistent current noise in normal and superconducting nanorings