Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Primordial Black Holes as Dark Matter: The Power Spectrum and
  Evaporation of Early Structures   We consider the possibility that massive primordial black holes are the
dominant form of dark matter. Black hole formation generates entropy
fluctuations that adds a Poisson noise to the matter power spectrum. We use
Lyman-alpha forest observations to constrain this Poisson term in matter power
spectrum, then we constrain the mass of black holes to be less than few times
10^4 solar mass. We also find that structures with less than ~ 10^3 primordial
black holes evaporate by now.

3
The categories of this paper are: physics
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
16
The categories of this paper are: stat