Tootfinder

Dark matter pair absorption
Martin Bauer, Javier Perez-Soler, Jack D. Shergold
https://arxiv.org/abs/2507.14287 https://arxiv.org/pdf…

Dark matter pair absorption
We present a comprehensive analysis of the sensitivity of atomic transitions to light dark matter pair absorption. Unlike scattering, where only a fraction of the dark matter energy is deposited, pair absorption processes absorb the full mass, and are therefore capable of constraining far lighter dark matter. Spin-flip and fine structure transitions are able to constrain electroweak scale axial-vector couplings for bosonic dark matter with $μ\mathrm{eV}$ to eV masses, whilst principal quantum …

Quantum gravitational corrections at third-order curvature, acoustic analog black holes and their quasinormal modes
R. Casadio, C. Noberto Souza, R. da Rocha
https://arxiv.org/abs/2506.10847

Quantum gravitational corrections at third-order curvature, acoustic analog black holes and their quasinormal modes
Quasinormal modes for bosonic (scalar, electromagnetic, and axial gravitational) and fermionic field perturbations, radiated from black holes that carry quantum gravitational corrections at third order in the curvature to the Schwarzschild solution, are scrutinized from the propagation of analog transonic sound waves across a de Laval nozzle. The thermodynamic variables, the nozzle geometry, the Mach number, and the thrust coefficient are computed as functions of the parameter driving the effec…