Evolution of Primordial Black Holes in Loop Quantum Cosmology

Journal of astrophysics and astronomy

D. Dwivedee²  L. P. Singh²  R. Myrzakulov¹  M. Jamil2³  B. Nayak1² 

[1] Eurasian International Center for Theoretical Physics, Eurasian National University, Astana, Kazakstan.$$;Department of Physics, Utkal University, Vanivihar, Bhubaneswar 751 004, India.$$;Center for Advanced Mathematics and Physics (CAMP), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan.$$

关键词: Primordial black holes;    loop quantum cosmology;    accretion;    Hawking evaporation.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

In this work, we study the evolution of primordial black holes within the context of loop quantum cosmology. First we calculate the scale factor and energy density of the Universe for different cosmic era and then taking these as inputs, we study evolution of primordial black holes. From our estimation it is found that accretion of radiation does not affect evolution of primordial black holes in loop quantum cosmology. We also conclude that due to slow variation of scale factor, the upper bound on initial mass fraction of presently evaporating PBHs are much greater in loop quantum cosmology than the standard case.

【 授权许可】

Unknown