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astro-ph.CO2024
Excess Radiation from Axion-Photon Conversion
Andrea Addazi, Salvatore Capozziello, Qingyu Gan +2
Two notable anomalies in radio observations -- the excess radiation in the Rayleigh-Jeans tail of the cosmic microwave background, revealed by ARCADE2, and the twice-deeper absorpt…
hep-th2024
Superoscillations in High Energy Physics and Gravity
Andrea Addazi, Qingyu Gan
We explore superoscillations within the context of classical and quantum field theories, presenting novel solutions to Klein-Gordon's, Dirac's, Maxwell's and Einstein's equations.…
gr-qc2024
Resonant Graviton-Photon Conversion with Stochastic Magnetic Field in the Expanding Universe
Andrea Addazi, Salvatore Capozziello, Qingyu Gan
We investigate graviton-photon oscillations sourced by cosmological magnetic fields from Gertsenshtein effect. We adopt a robust perturbative approach and we find that the conversi…