Primordial black holes’ relevancy with dark matter

Abstract

Primordial black holes (PBHs) are probable candidates of dark matter (DM). In this review, we gathered data, evidence, and opinions from previous literatures to support the theory that PBHs are a form of DM. Besides, the formation of PBHs is introduced as well to give a more comprehensive description of PBHs. According to the results, the PBHs could assemble DM, or be DM itself, or generates DM, or influence DM. On the other hand, DM could have the similar influence on PBHs. Different relationships are discussed between PBHs and DM, including entropy, microlensing, distribution, growth rate, mass, and different detections (e.g., gammy ray). These results offer a guideline for future studies of PBHs.