Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraint on the Mass of Primordial Black Holes from the Value of the
  Cosmological Constant   In a recent propposal, the cosmological constant has been considered as as a
new thermodynamical variable and its change is related to the radiation
produced by black holes. Using this consideration and by modelling the
primordial black holes as Schwarzschild-de Sitter holes,we have constrained the
total mass of primordial black holes evaporated by now, giving an estimate of
the order of 1.624x10^24 solar masses.

23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn