235 citations · 2.2k across the 57 of their papers we have counts for
6 papers · 1 filter
Perturbatively including inhomogeneities in axion inflation
Valerie Domcke, Yohei Ema, Stefan Sandner
Axion inflation, i.e. an axion-like inflaton coupled to an Abelian gauge field through a Chern-Simons interaction, comes with a rich and testable phenomenology. This is particularl…
Cosmological Collider Signatures of Higgs- Inflation
Yohei Ema, Sarunas Verner
We study the cosmological collider signatures in the Higgs- inflation model. We consider two distinct types of signals: one originating from the inflaton coupling to Standard…
Muon spin force
Yohei Ema, Ting Gao, Maxim Pospelov
Current discrepancy between the measurement and the prediction of the muon anomalous magnetic moment can be resolved in the presence of a long-range force created by ordinary atoms…
Searching for axions with kaon decay at rest
Yohei Ema, Zhen Liu, Ryan Plestid
We describe a novel search strategy for axions (or hadronically coupled axion-like particles) in the mass range of . The search relies on kaon decay at…
Heavy Neutral Leptons from Stopped Muons and Pions
Yohei Ema, Zhen Liu, Kun-Feng Lyu +1
Stopped muons, which are generic in pion-at-rest experiments, can shed light on heavy neutral leptons (HNLs) in unexplored parameter spaces. If the HNL is lighter than the muon, th…
Zero Casimir Force in Axion Electrodynamics and the Search for a New Force
Yohei Ema, Masashi Hazumi, Hideo Iizuka +2
We point out that there is a stable configuration of metal plates where the Casimir force is vanishing in axion electrodynamics. We consider a concrete setup involving Weyl semimet…