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DOI码：10.1016/j.physletb.2021.136791
发表刊物：Physics Letters B
摘要：We propose a novel primordial black hole (PBH) formation mechanism based on a first-order phase transition (FOPT). If a fermion species gains a huge mass in the true vacuum, the corresponding particles get trapped in the false vacuum as they do not have sufficient energy to penetrate the bubble wall. After the FOPT, the fermions are compressed into the false vacuum remnants to form non-topological solitons called Fermi-balls, and then collapse to PBHs due to the Yukawa attractive force. We derive the PBH mass and abundance, showing that for a O(GeV) FOPT the PBHs could be ∼ 1017 g and explain all of dark matter. If the FOPT happens at higher scale, PBHs are typically overproduced and extra dilution mechanism is necessary to satisfy current constraints.
论文类型：期刊论文
一级学科：物理学
文献类型：期刊
卷号：824
期号：136791
是否译文：否
发表时间：2022-01-10
收录刊物：SCI
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0370269321007310?via%3Dihub