On loss of quantum coherence in an interacting Fermi gas

Details On loss of quantum coherence in an interacting Fermi gas On loss of quantum coherence in an interacting Fermi gas

1998-10-22

arxiv.org/abs/cond-mat/9810297v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, REVTex

Scientific paper

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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