exploding primordial black hole

An exploding primordial black hole (PBH) refers to a hypothetical scenario where a tiny black hole formed shortly after the Big Bang reaches the end of its life and rapidly evaporates due to Hawking radiation, releasing a burst of high-energy particles that could potentially reveal new particles and physics beyond the Standard Model if detected; essentially acting as a window into extreme conditions in the early universe. The process of a black hole evaporating is explained by Hawking radiation, where quantum fluctuations near the event horizon create particle-antiparticle pairs, with one particle escaping while the other gets pulled into the black hole, causing the black hole to lose mass. When a primordial black hole explodes, it would release a burst of particles with very high energies, potentially including particles not yet observed in particle accelerators.