Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark Matter and Leptogenesis from Gravitational Production   Since the gravitational interaction is universal, any particle that ever
existed, if kinematically accessible, has to be produced through her. We
explore the possibility that dark matter is generated purely from gravitational
scatterings together with heavy Majorana right-handed neutrinos that are
long-lived. Their late decay could inject significant entropy into the thermal
bath, diluting both the dark matter abundance and the cosmic baryon asymmetry,
thereby imposing various constraints on the reheating dynamics. Additionally to
the entropy injection, long-lived right-handed neutrinos could also be
responsible for generating the baryon asymmetry through leptogenesis, and hence
establish some nontrivial relations between the dark matter and the
right-handed properties, and the reheating dynamics

1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph