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Primordial black holes as a probe of strongly first-order electroweak phase transition

Primordial black holes as a probe of strongly first-order electroweak phase transition

Primordial black holes can be produced by density fluctuations generated from delayed vacuum decays of first-order phase transition. The primordial black holes generated at the electroweak phase transition have masses of about $10^{-5}$ solar mass. Such primordial black holes in the mass range can be tested by current and future …