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hep-ph2025
Constraining memory-burdened primordial black holes with graviton-photon conversion and binary mergers
Po-Yan Tseng, Yu-Min Yeh
The memory-burden effect stabilizes the evaporating Primordial Black Holes (PBHs) before its complete decay. This also suppresses the evaporation flux via the entropy factor to the…
hep-ph2025
Angular momentum of vacuum bubbles in a first-order phase transition
Jan Tristram Acuña, Danny Marfatia, Po-Yan Tseng
The formation of primordial black holes (PBHs) during a first-order phase transition (FOPT) in a dark sector has been of recent interest. A quantity that characterizes a black hole…
hep-ph2025
Constraints on extended axion structures from the lensing of fast radio bursts
Jan Tristram Acuña, Kuan-Yen Chou, Po-Yan Tseng
Axions are hypothetical pseudoscalar particles that have been regarded as promising dark matter (DM) candidates. On the other hand, extended compact objects such as axion stars, wh…