Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Density profiles and voids in modified gravity models   We study the formation of voids in a modified gravity model in which gravity
is generically stronger or weaker on large scales. We show that void abundances
provide complementary information to halo abundances: if normalized to the CMB,
models with weaker large-scale gravity have smaller large scale power, fewer
massive halos and fewer large voids, although the scalings are not completely
degenerate with $\sigma_8$. Our results suggest that, in addition to their
abundances, halo and void density profiles may also provide interesting
constraints on such models: stronger large scale gravity produces more
concentrated halos, and thinner void walls. This potentially affects the
scaling relations commonly assumed to translate cluster observables to halo
masses, potentially making these too, useful probes of gravity.

25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin