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hep-ph2026
Topics in the phenomenology of axions: the cases of cosmic strings and superradiance
Antonios Kyriazis
Originally proposed as a solution to the strong CP problem and later understood to be a good dark matter candidates, axions have appeared in a variety of beyond-the-standard-model…
hep-ph2026
Echoes of Global Cosmic Strings
Jeff A. Dror, Antonios Kyriazis
If the Universe underwent a cosmic phase transition, it may have left behind a network of cosmic strings. When these strings arise from the breaking of a gauge symmetry, their deca…
hep-ph2025
Gravitational Waves from Resonant Transitions of Tidally Perturbed Gravitational Atoms
Antonios Kyriazis, Fengwei Yang
Light bosons can form a gravitational atom (GA) around a spinning black hole through the superradiance process. Considering the black hole to be part of a binary system, the tidal…