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Tremaine-Gunn Control: Evading Bounds on Light Fermion Dark Matter
Joel Barir, Diego Blas, Anubhav Mathur +1
Pauli exclusion is often regarded as imposing a model-independent lower bound on the mass of fermionic dark matter in galaxies. We show that dark-sector interactions can substantia…
Low-Frequency Gravitational Bremsstrahlung and Memory in a Medium
Diego Blas, Silvia Gasparotto, Hitoshi Murayama +2
Gravitational radiation from the early Universe offers a powerful window into physics beyond the Standard Model (SM). In this paper, we investigate the low-frequency tail of gravit…
Gravitational waves decay in vacuum
Diego Blas, José Antonio Oller
We show that gravitational waves (GW), treated as coherent graviton states, decay into photon pairs in vacuum. The process, even if suppressed by , is lifted by two effects co…
Cavity Multimodes as an Array for High-Frequency Gravitational Waves
Diego Blas, Yifan Chen, Yuxin Liu +2
Microwave cavities operated in the presence of a background magnetic field provide a promising avenue for detecting high-frequency gravitational waves (HFGWs). We demonstrate for t…