output
20142023
most citedFirst M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon

683 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2021 · hep-phShow all

3 papers · 2 filters

hep-ph2021★ 12 cited

Non-thermally trapped inflation by tachyonic dark photon production

Naoya Kitajima, Shota Nakagawa, Fuminobu Takahashi

We show that a dark Higgs field charged under U(1) gauge symmetry is trapped at the origin for a long time, if dark photons are produced by an axion condensate via tachyo…

hep-ph2021★ 5 cited

Semiclassical analysis of axion-assisted and axion-driven pair production

Hiroyuki Kitamoto, Masaki Yamada

We study the pair production of fermions in a time dependent axion background with and without an electric background. We construct the adiabatic mode functions which incorporate t…

hep-ph2021★ 43 cited

Cosmic Birefringence Triggered by Dark Matter Domination

Shota Nakagawa, Fuminobu Takahashi, Masaki Yamada

Cosmic birefringence is predicted if an axion-like particle (ALP) moves after the recombination. We show that this naturally happens if the ALP is coupled to the dark matter densit…