2015/03/31 by Shun-Zhi Wang, Shun-zhi Wang, Hoernisa Iminniyaz +1
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Lambda-CDM model #Mathematical physics #Particle physics #Physics #Scalar (mathematics) #Scalar field dark matter #Scalar–tensor theory #Tensor (intrinsic definition) #hep-ph
paper · pdf · doi:10.1142/s0217751x16500214
The whole structure of the paper is changed. The new figure is added and typos are corrected
arxiv created 2015/08/19 · openalex publication_date 2016/03/02 · arxiv updated 2016/03/16 · openalex created_date 2017/04/07 · openalex updated_date 2026/08/05
The relic abundance of asymmetric dark matter particles in the scalar-tensor model is analyzed in this paper. We extend the numerical and analytical calculations of the relic density of the asymmetric dark matter in the standard cosmological scenario to the nonstandard cosmological scenario. We focus on the scalar-tensor model. Hubble expansion rate is changed in the nonstandard cosmological scenario. This leaves its imprint on the relic density of dark matter particles. In this paper we investigate to what extent the asymmetric dark matter particle’s relic density is changed in the scalar-tensor model. We use the observed present day dark matter abundance to find the constraints on the parameter space in this model.