242 citations · 2.1k across the 39 of their papers we have counts for
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Primordial Black Holes
Albert Escrivà, Florian Kuhnel, Yuichiro Tada
Aspects of primordial black holes, i.e. black holes formed in the early Universe, are reviewed. Special emphasis is put on their formation, their role as dark matter candidates and…
Primordial black holes and gravitational waves induced by exponential-tailed perturbations
Katsuya T. Abe, Ryoto Inui, Yuichiro Tada +1
Primordial black holes (PBHs) whose masses are in have been extensively studied as a candidate of whole dark matter (DM). One of the probe…
Hybrid metric-Palatini Higgs inflation
Minxi He, Yusuke Mikura, Yuichiro Tada
We propose an extension of the Higgs inflation to the hybrid metric-Palatini gravity, where we introduce non-minimal couplings between Higgs and both the metric-type and the Palati…
Effective inspiral spin distribution of primordial black hole binaries
Yasutaka Koga, Tomohiro Harada, Yuichiro Tada +2
We investigate the probability distribution of the effective inspiral spin, the mass ratio, and the chirp mass of primordial black hole (PBH) binaries, incorporating the effect of…
Stochastic formalism for U(1) gauge fields in axion inflation
Tomohiro Fujita, Kyohei Mukaida, Yuichiro Tada
We develop the stochastic formalism for gauge fields that has the Chern-Simons coupling to a rolling pseudo-scalar field during inflation. The Langevin equations fo…
Effective treatment of U(1) gauge field and charged particles in axion inflation
Tomohiro Fujita, Jun'ya Kume, Kyohei Mukaida +1
The axionic inflaton with the Chern-Simons coupling may generate U(1) gauge fields and charged particles simultaneously. In order to incorporate the backreaction from the charged p…