Dark matter as the Bose–Einstein condensation in loop quantum cosmology

The European Physical Journal C

K. Atazadeh¹  M. Mousavi¹  F. Darabi² 

[1] Department of Physics, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran;Department of Physics, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran;Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), 55134-441, Maragha, Iran;

关键词: Dark Matter;    Einstein Condensation;    Dark Matter Particle;    Loop Quantum Gravity;    Baryonic Matter;   

DOI  :  10.1140/epjc/s10052-016-4182-x

来源: Springer

【 摘 要 】

We consider the FLRW universe in a loop quantum cosmological model filled with radiation, baryonic matter (with negligible pressure), dark energy, and dark matter. The dark matter sector is supposed to be of Bose–Einstein condensate type. The Bose–Einstein condensation process in a cosmological context by supposing it as an approximate first-order phase transition, has already been studied in the literature. Here, we study the evolution of the physical quantities related to the early universe description such as the energy density, temperature, and scale factor of the universe, before, during, and after the condensation process. We also consider in detail the evolution era of the universe in a mixed normal–condensate dark matter phase. The behavior and time evolution of the condensate dark matter fraction is also analyzed.

【 授权许可】

CC BY