823 citations · 14.7k across the 237 of their papers we have counts for
237 papers
Enhancement of gravitational waves at Q-ball decay including non-linear density perturbations
Masahiro Kawasaki, Kai Murai
The existence of a stochastic gravitational wave background is indicated by the recent pulsar timing array (PTA) experiments. We study the enhanced production of second-order gravi…
Hill-top inflation from Dai-Freed anomaly in the standard model -- A solution to the iso-curvature problem of the axion dark matter
Masahiro Kawasaki, Tsutomu T. Yanagida
The discrete symmetry in the standard model (SM) with three right-handed neutrinos is free from the Dai-Freed anomaly. Motivated by this symmetry, we constructed a topo…
Clustering of Primordial Black Holes from QCD Axion Bubbles
Kentaro Kasai, Masahiro Kawasaki, Naoya Kitajima +3
We study the clustering of primordial black holes (PBHs) and axion miniclusters produced in the model proposed to explain the LIGO/Virgo events or the seeds of the supermassive bla…
Dai-Freed anomaly in the standard model and topological inflation
Masahiro Kawasaki, Tsutomu T. Yanagida
When we impose the discrete symmetry in the standard model we have Dai-Freed global anomalies. However, interestingly if we introduce three right-handed neutrinos we can have an an…
EMPRESS. XII. Statistics on the Dynamics and Gas Mass Fraction of Extremely-Metal Poor Galaxies
Yi Xu, Masami Ouchi, Yuki Isobe +49
We present demography of the dynamics and gas-mass fraction of 33 extremely metal-poor galaxies (EMPGs) with metallicities of and low stellar masses of $10^4-…
Enhancement of second-order gravitational waves at Q-ball decay
Shinta Kasuya, Masahiro Kawasaki, Kai Murai
The recent observation of He favors a large lepton asymmetry at the big bang nucleosynthesis. If Q-balls with a lepton charge decay after the electroweak phase transition, such…