3 citations · 3 across the 4 of their papers we have counts for
4 papers
Dark Transport Erases Baryon Inhomogeneity from Supercooled Phase Transitions
Sudhakantha Girmohanta, Kohei Kamada, Yuichiro Nakai +1
Supercooled phase transitions can generate observable gravitational waves, but their bubble dynamics may also imprint large spatial inhomogeneities in the baryon asymmetry. For pha…
Magnetic Helicity, Magnetic Monopoles, and Higgs Winding
Hajime Fukuda, Yuta Hamada, Kohei Kamada +2
Changes in magnetic helicity are often discussed across a variety of fields, from condensed matter physics to early universe cosmology. It is frequently stated that the helicity ch…
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…
New comprehensive description of the scaling evolution of the cosmological magneto-hydrodynamic system
Fumio Uchida, Motoko Fujiwara, Kohei Kamada +1
We study the evolution of primordial magnetic fields until the recombination epoch, which is constrained by the conservation of magnetic helicity density if they are maximally heli…