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A Mesoscopic Quantum Eraser
G. Hackenbroich, B. Rosenow, H. A. Weidenmueller
Motivated by a recent experiment by Buks et al. [Nature 391, 871 (1998)] we consider electron transport through an Aharonov-Bohm interferometer with a quantum dot in one of its arm…
Metal-Insulator Transition in Randomly Interacting Systems
B. Rosenow, R. Oppermann
We discuss a metal-insulator transition caused by random couplings of magnetic moments in itinerant systems. An analytic solution for the single particle Green function is derived…
Low-energy excitations in fermionic spin glasses: A quantum-dynamical image of Parisi symmetry breaking
R. Oppermann, B. Rosenow
We report large effects of Parisi replica permutation symmetry breaking (RPSB) on elementary excitations of fermionic systems with frustrated magnetic interactions. The electronic…
Quantum Zeno effect and parametric resonance in mesoscopic physics
G. Hackenbroich, B. Rosenow, H. A. Weidenmueller
As a realization of the quantum Zeno effect, we consider electron tunneling between two quantum dots with one of the dots coupled to a quantum point contact detector. The coupling…
Studies of the phase diagram of randomly interacting fermionic systems
R. Oppermann, B. Rosenow
We present details of the phase diagrams of fermionic systems with random and frustrated interactions, emphasizing the important role of the chemical potential. The insulating ferm…
Parisi-Symmetry of the Many-Body Quantum Theory of randomly interacting fermionic systems
R. Oppermann, B. Rosenow
We show that fermion systems with random interactions lead to strong coupling of glassy order and fermionic correlations, which culminates in the implementation of Parisi replica p…