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[[UTAPwiki/セミナー/初期宇宙・相対論速報]] *Title: Primordial black holes from fifth forces [#afa9fcb6] **Speaker: Koki Tokeshi [#vf076617] Primordial black holes could have formed in the early universe and various formation mechanisms have been proposed. Among them, I will review the relativly new one, first applied to PBHs in [1], in which the long range attractive forces between the light scalar and heavy fermion fields are exploited. I will also review the complementary paper [2], in which more general and quantitative analyses have been done, supporting the idea and estimations given in [1]. Related discussion about PBHs vs PMDHs in [3] and observational implications in [4] will also be reviewed. References: [1] Phys. Rev. D 97 (2018), 081302 [2] arXiv:2104.05271 (hep-th) [3] Phys. Rev. D 100 (2019), 083518 [4] Phys. Rev. Lett. 126 (2021), 041101 |