Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comments on Long-Wavelength Backreaction and Dark Energy   In this brief note we comment on a recent attempt by Martineau and
Brandenberger (astro-ph/0510523) to explain the acceleration of the Universe
using the back-reaction of long-wavelength perturbations associated with
isocurvature perturbation modes.

31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con