254 citations · 1.8k across the 51 of their papers we have counts for
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Stability of domain wall network with initial inflationary fluctuations, and its implications for cosmic birefringence
Diego Gonzalez, Naoya Kitajima, Fuminobu Takahashi +1
We study the formation and evolution of domain walls with initial inflationary fluctuations by numerical lattice calculations that, for the first time, correctly take into account…
Dark Photon Dark Matter from Cosmic Strings and Gravitational Wave Background
Naoya Kitajima, Kazunori Nakayama
Dark photon dark matter may be produced by the cosmic strings in association with the dark U(1) gauge symmetry breaking. We perform three-dimensional lattice simulations of the Abe…
Power spectrum of domain-wall network and its implications for isotropic and anisotropic cosmic birefringence
Naoya Kitajima, Fumiaki Kozai, Fuminobu Takahashi +1
Recently, based on a novel analysis of the Planck satellite data, a hint of a uniform rotation of the polarization of cosmic microwave background photons, called isotropic cosmic b…