162 citations · 2.1k across the 70 of their papers we have counts for
10 papers · 1 filter
Kilobyte Cosmic Birefringence from ALP Domain Walls
Fuminobu Takahashi, Wen Yin
ALP domain walls without strings may be formed in the early Universe. We point out that such ALP domain walls lead to both isotropic and anisotropic birefringence of cosmic microwa…
Particle Production from Oscillating Scalar Field and Consistency of Boltzmann Equation
Takeo Moroi, Wen Yin
Boltzmann equation plays important roles in particle cosmology in studying the evolution of distribution functions (also called as occupation numbers) of various particles. For the…
Light Dark Matter from Inflaton Decay
Takeo Moroi, Wen Yin
We propose a simple mechanism of light dark matter (DM) production from the decay of the oscillating inflaton condensation. If the reheating temperature after inflation is higher t…
Scale and quality of Peccei-Quinn symmetry and weak gravity conjectures
Wen Yin
The promising solution to the strong CP problem by a Peccei-Quinn (PQ) symmetry may introduce quality and hierarchy problems, which are both relevant to Planck physics. In this pap…
Boosted Neutrinos and Relativistic Dark Particles as Messengers from Reheating
Joerg Jaeckel, Wen Yin
Usually information from early eras such as reheating is hard to come by. In this paper we argue that, given the right circumstances, right-handed sterile neutrinos decaying to lef…
What if ALP dark matter for the XENON1T excess is the inflaton
Fuminobu Takahashi, Masaki Yamada, Wen Yin
The recent XENON1T excess in the electron recoil data can be explained by anomaly-free axion-like particle (ALP) dark matter with mass keV and the decay constan…
XENON1T excess from anomaly-free ALP dark matter and its implications for stellar cooling anomaly
Fuminobu Takahashi, Masaki Yamada, Wen Yin
Recently, an anomalous excess was found in the electronic recoil data collected at the XENON1T experiment. The excess may be explained by an axion-like particle (ALP) with mass of…
Stochastic Axion Dark Matter in Axion Landscape
Shota Nakagawa, Fuminobu Takahashi, Wen Yin
We study the stochastic axion dark matter scenario in the axion landscape, where one of the axions is light and stable and therefore explains dark matter. If the axion mass at the…
QCD Axion Window and False Vacuum Higgs Inflation
Hiroki Matsui, Fuminobu Takahashi, Wen Yin
The abundance of the QCD axion is known to be suppressed if the Hubble parameter during inflation, , is lower than the QCD scale, and if the inflation lasts sufficient…
Muon in Higgs-anomaly mediation
Tsutomu T. Yanagida, Wen Yin, Norimi Yokozaki
A simple model for the explanation of the muon anomalous magnetic moment was proposed by the present authors within the context of the minimal supersymmetric standard model [1607.0…