Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new mechanism for dark matter generation from an interacting
  cosmological constant   We propose an alternative scenario for the dark matter generation from an
evolving cosmological constant which interacts with the dominant background in
certain intermediate phase of the universe, and relaxes to the observed small
value at present. In this way, it is shown that the interaction of the
cosmological constant with the radiation or matter might generate the dark
matter densities with a varied mass spectrum in the universe with their
characteristic arc-like frozen signatures on the Cosmic Microwave Background
Radiation (CMBR). This approach also suggests a possible solution to the long
standing cosmological constant problem.

16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math