From the 1 of 14 linked papers with an AI index.
14 papers
Seesaw reheating
Yann Mambrini
The paper proposes a Seesaw Reheating scenario where the inflaton first transfers energy to a long-lived scalar linked to lepton-number breaking, whose delayed decay into right‑han…
When direct detection constrains reheating temperature: freeze-in with stronger couplings and inflaton-seeded freeze-in
Xavier Bertou, Olivier Deligny, Mathieu Gross +2
Recent results from the DAMIC-M and PandaX collaborations have excluded the standard freeze-in production of dark matter for masses in the range $3~\mathrm{MeV} \lesssim m_Ï\lesss…
Searching for UFOs from the early universe: direct detection prospects for relativistically decoupling dark matter
Stephen E. Henrich, Yann Mambrini, Keith A. Olive
Particles that decouple relativistically from the Standard Model bath during reheating represent a versatile class of well-motivated cold dark matter candidates. In fact, ultrarela…
When Primordial Black Holes Absorb During the Early Universe
Md Riajul Haque, Rajesh Karmakar, Yann Mambrini
We study the evolution of primordial black holes (PBHs) formed in the early universe in the presence of a surrounding thermal bath. By incorporating the effects of thermal absorpti…
Z' portal dark matter from post-inflationary reheating: WIMPs, FIMPs, and UFOs
Stephen E. Henrich, Yann Mambrini, Keith A. Olive
We investigate the production of dark matter (DM) via a heavy mediator during the post-inflationary reheating epoch. In particular, we study production from three mechanisms w…
Ultra-relativistic freeze-out: a bridge from WIMPs to FIMPs
Stephen E. Henrich, Yann Mambrini, Keith A. Olive
We re-examine the case for dark matter (DM) produced by ultra-relativistic freeze-out (UFO). UFO is the mechanism by which Standard Model (SM) neutrinos decouple from the radiation…