Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Primordial Black Hole Constraints with Large Extra Dimensions   We study how the constraints on the primordial black hole density arising
from the extragalactic photon background are modified in the scenario that
there exist extra large spatial dimensions. We find that though the overall
magnitude of the constraints is not substantially different, the mass ranges to
which they apply are, and for some choices of mass it is possible for the black
holes to constitute the entirety of the dark matter.

33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
19
The categories of this paper are: eess