Tootfinder

Gravitational Wave Spectrum from the Production of Dark Matter via the freeze-in Mechanism
Yonghua Wang, Wei Chao
https://arxiv.org/abs/2508.10665 https://…

Gravitational Wave Spectrum from the Production of Dark Matter via the freeze-in Mechanism
Since the first detection of gravitational waves by ground-based interferometers, it has emerged as a novel probe for exploring physics in the early universe. The particle nature of cold dark matter (DM) and its underlying production mechanisms remain long-standing unresolved issues in the field. Notably, if DM is generated through the freeze-in mechanism in the early universe, direct laboratory detection becomes extraordinarily challenging due to its extremely weak coupling with standard model…

Resurgence of CO in a warm bubble around accreting protoplanets and its observability
O. Chrenko, S. Casassus, R. O. Chametla
https://arxiv.org/abs/2507.03370

Resurgence of CO in a warm bubble around accreting protoplanets and its observability
The cold outer regions of protoplanetary disks are expected to contain a midplane-centered layer in which gas-phase CO molecules freeze-out and their overall abundance is low. The layer then manifests itself as a void in the channel maps of CO rotational emission lines. We explore whether the frozen-out layer can expose the circumplanetary environment of embedded accreting protoplanets to observations. To this end, we performed 3D radiative gas-dust hydrodynamic simulations, directly linking op…

Inelastically Decoupling Dark Matter
Ronny Frumkin, Yonit Hochberg, Eric Kuflik, Binyamin Vilk
https://arxiv.org/abs/2508.04772 https://arxiv.org/pdf/2508.…

Inelastically Decoupling Dark Matter
We present a new dark matter candidate, the `inELastically DEcoupling Relic' (iELDER), which is a cold thermal relic whose abundance is determined by the freeze out of its inelastic scattering off of bath particles in the presence of $3\to2$ self-annihilations. The dark matter is predicted to be light, in the $O(\mathrm{MeV}-\mathrm{GeV})$ range, with significant self-annihilations and very weak inelastic couplings to ordinary matter. We demonstrate iELDER dark matter using a $Z_3$-symmetric to…