Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Annealed disorder, rare regions, and local moments: A novel mechanism
  for metal-insulator transitions   Local magnetic moments in disordered sytems can be described in terms of
annealed magnetic disorder, in addition to the underlying quenched disorder. It
is shown that for noninteracting electron systems at zero temperature, the
annealed disorder leads to a new mechanism, and a new universality class, for a
metal-insulator transition. The transition is driven by a vanishing of the
thermodynamic density susceptibility rather than by localization effects. The
critical behavior near two-dimensions is determined, and the underlying physics
is discussed.

19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th