Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical results for two interacting particles in a random environment   Much evidence has been collected to date which shows that repulsive
electron-electron interaction can lead to the formation of particle pairs in a
one-dimensional random energy landscape. The localization length \lambda_2 of
these pair states is finite, but larger than the localization length \lambda_1
of the individual particles. After a short review of previous work, we present
numerical evidence for this effect based on an analysis of the interaction
matrix elements and an application of the decimation method. The results based
on the decimation method for a two-dimensional disordered medium support the
localization-delocalization transition of pair states predicted recently.

7
The categories of this paper are: hep-th
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph