Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Primordial Black Holes as All Dark Matter   We argue that a primordial black hole is a natural and unique candidate for
all dark matter. We show that, in a smooth-hybrid new double inflation model, a
right amount of the primordial black holes, with a sharply-defined mass, can be
produced at the end of the smooth-hybrid regime, through preheating. We first
consider masses < 10^(-7)M_sun which are allowed by all the previous
constraints. We next discuss much heavier mass 10^5 M_sun hinted at by entropy,
and galactic size evolution, arguments. Effects on the running of the scalar
spectral index are computed.

33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
3
The categories of this paper are: physics
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn