On loss of quantum coherence in an interacting Fermi gas

Kasper Astrup Eriksen; Per Hedegård

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arXiv · cond-mat/9810297

On loss of quantum coherence in an interacting Fermi gas

Kasper Astrup Eriksen·Per Hedegård

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Abstract

We clarify the path integral calculation, recently suggested by Golubev and Zaikin, and show, contrary to their claim, that quasiparticles become fully coherent quantum particles in the $T \to 0$ limit. The important physical point is the inclusion of the recoil of the quasiparticle when interacting with fluctuations in the rest of the Fermi gas.

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Kasper Astrup Eriksen, Per Hedegård. 1998-10-22. On loss of quantum coherence in an interacting Fermi gas. https://arxiv.org/abs/cond-mat/9810297

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