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Conference Paper

Decoherence of fermions subject to a quantum bath

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Citation

Marquardt, F. (2008). Decoherence of fermions subject to a quantum bath. In ADVANCES IN SOLID STATE PHYSICS 46 (pp. 161-172). SPRINGER-VERLAG BERLIN.


Cite as: https://hdl.handle.net/21.11116/0000-0001-D8C2-0
Abstract
The destruction of quantum-mechanical phase coherence by a fluctuating quantum bath has been investigated mostly for a single particle. However, for electronic transport through disordered samples and mesoscopic interference setups, we have to treat a many-fermion system subject to a quantum bath. Here, we review a novel technique for treating this situation in the case of ballistic interferometers, and discuss its application to the electronic Mach-Zehnder setup. We use the results to bring out the main features of decoherence in a many-fermion system and briefly discuss the same ideas in the context of weak localization.