8 citations · 12 across the 11 of their papers we have counts for
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Revisiting constraints on primordial magnetic fields from spectral distortions of cosmic microwave background
Fumio Uchida, Kohei Kamada, Hiroyuki Tashiro
The magneto-hydrodynamic decay of primordial magnetic fields can distort the black-body spectrum of the cosmic microwave background (CMB) by draining magnetic energy into thermal p…
Leptogenesis from magnetic helicity of gauged
Hajime Fukuda, Kohei Kamada, Thanaporn Sichanugrist
If the symmetry is gauged with the addition of right-handed neutrinos, the standard model current is anomalous with respect to the gauge field itself. Then, the a…
phase ambiguity of cosmic birefringence
Fumihiro Naokawa, Toshiya Namikawa, Kai Murai +2
We point out that the rotation angle of cosmic birefringence, which is a recently reported parity-violating signal in the cosmic microwave background (CMB), has a phase ambigui…
On the inefficiency of fermion level-crossing under the parity-violating spin-2 gravitational field
Kohei Kamada, Jun'ya Kume
Gravitational chiral anomaly connects the topological charge of spacetime and the chirality of fermions. It has been known that the chirality is carried by the particles (or the ex…