Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Algebraic and Geometric Mean Density of States in Topological Anderson
  Insulators   Algebraic and geometric mean density of states in disordered systems may
reveal properties of electronic localization. In order to understand the
topological phases with disorder in two dimensions, we present the calculated
density of states for disordered Bernevig-Hughes-Zhang model. The topological
phase is characterized by a perfectly quantized conducting plateau, carried by
helical edge states, in a two-terminal setup. In the presence of disorder, the
bulk of the topological phase is either a band insulator or an Anderson
insulator. Both of them can protect edge states from backscattering. The
topological phases are explicitly distinguished as topological band insulator
or topological Anderson insulator from the ratio of the algebraic mean density
of states to the geometric mean density of states. The calculation reveals that
topological Anderson insulator can be induced by disorders from either a
topologically trivial band insulator or a topologically nontrivial band
insulator.

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The categories of this paper are: solv-int
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
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The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
8
The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
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The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom