Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interaction and Quantum Decoherence   We discuss a fundamental effect of the interaction-induced decoherence of the
electron wave function in disordered metals. In the first part of the paper we
consider a simple model of a quantum particle interacting with a bath of
harmonic oscillators and analyze the physical origin of the effect. This
exactly solvable model also allows to understand why the arguments against the
existence of the effect at low temperatures fail. The second part of the paper
is devoted to a rigorous analysis of quantum decoherence in disordered metals.
We also discuss the relation of our results to the recent experiments on GaAs
structures. The existence of a finite quantum decoherence rate at low $T$
implies that low dimensional disordered metals with generic parameters do not
become insulators even at T=0.

13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex