Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An S-brane solution with acceleration and small enough variation of G   An S-brane solution with two non-composite electric branes and a set of l
scalar fields is considered. The intersection rule for branes corresponds to
the Lie algebra A_2. The solution contains five factor spaces with the fifth
one interpreted as ``our'' 3-dimensional space. It is shown that there exists a
time interval where accelerating expansion of ``our'' 3-dimensional space is
compatible with small enough value of effective gravitational ``constant''
variation.

23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph