Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distribution of level curvatures for the Anderson model at the
  localization-delocalization transition   We compute the distribution function of single-level curvatures, $P(k)$, for
a tight binding model with site disorder, on a cubic lattice. In metals $P(k)$
is very close to the predictions of the random-matrix theory (RMT). In
insulators $P(k)$ has a logarithmically-normal form. At the Anderson
localization-delocalization transition $P(k)$ fits very well the proposed novel
distribution $P(k)\propto (1+k^{\mu})^{3/\mu}$ with $\mu \approx 1.58$, which
approaches the RMT result for large $k$ and is non-analytical at small $k$. We
ascribe such a non-analiticity to the spatial multifractality of the critical
wave functions.

19
The categories of this paper are: eess
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph