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Hayato Motohashi

Ultra slow-roll inflation and the non-Gaussianity consistency relation
2013 · Jérôme Martin, Hayato Motohashi, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 374
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Primordial black holes and slow-roll violation
2017 · Hayato Motohashi, Wayne Hu · Physical review. D/Physical review. D. · 348
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Inflation with a constant rate of roll
2015 · Hayato Motohashi, Alexei A. Starobinsky, et al. · Journal of Cosmology and Astroparticle Physics · 303
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Black hole spectroscopy: from theory to experiment
2026 · Emanuele Berti, Vitor Cardoso, et al. · Classical and Quantum Gravity · 239
Healthy degenerate theories with higher derivatives
2016 · Hayato Motohashi, Karim Noui, et al. · Journal of Cosmology and Astroparticle Physics · 186
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Black hole perturbation in the most general scalar-tensor theory with second-order field equations: The odd-parity sector
2012 · Tsutomu Kobayashi, Hayato Motohashi, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 182
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Black hole perturbation in the most general scalar-tensor theory with second-order field equations. II. The even-parity sector
2014 · Tsutomu Kobayashi, Hayato Motohashi, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 169
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Primordial black holes and local non-Gaussianity in canonical inflation
2019 · Samuel Passaglia, Wayne Hu, et al. · Physical review. D/Physical review. D. · 166
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Third order equations of motion and the Ostrogradsky instability
2015 · Hayato Motohashi, Teruaki Suyama · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 149
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f(R) constant-roll inflation
2017 · Hayato Motohashi, Alexei A. Starobinsky · The European Physical Journal C · 114
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Constant-roll inflation: Confrontation with recent observational data
2017 · Hayato Motohashi, Alexei A. Starobinsky · Europhysics Letters (EPL) · 112
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Constant roll and primordial black holes
2020 · Hayato Motohashi, Shinji Mukohyama, et al. · Journal of Cosmology and Astroparticle Physics · 92
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Phantom Boundary Crossing and Anomalous Growth Index of Fluctuations in Viable f(R) Models of Cosmic Acceleration
2010 · H. Motohashi, A. A. Starobinsky, et al. · Progress of Theoretical Physics · 89
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Cosmology Based on f(R) Gravity Admits 1 eV Sterile Neutrinos
2013 · Hayato Motohashi, Alexei A. Starobinsky, et al. · Physical Review Letters · 84
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Linear stability analysis of hairy black holes in quadratic degenerate higher-order scalar-tensor theories: Odd-parity perturbations
2019 · Kazufumi Takahashi, Hayato Motohashi, et al. · Physical review. D/Physical review. D. · 83
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Squeezed bispectrum and one-loop corrections in transient constant-roll inflation
2023 · Hayato Motohashi, Yuichiro Tada · Journal of Cosmology and Astroparticle Physics · 81
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On rotating black holes in DHOST theories
2020 · Jibril Ben Achour, Hongguang Liu, et al. · Journal of Cosmology and Astroparticle Physics · 78
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Exact black hole solutions in shift-symmetric quadratic degenerate higher-order scalar-tensor theories
2019 · Hayato Motohashi, Masato Minamitsuji · Physical review. D/Physical review. D. · 77
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Resonant Excitation of Quasinormal Modes of Black Holes
2025 · Hayato Motohashi · Physical Review Letters · 75
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Fundamental theorem on gauge fixing at the action level
2016 · Hayato Motohashi, Teruaki Suyama, et al. · Physical review. D/Physical review. D. · 75
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General Relativity solutions with stealth scalar hair in quadratic higher-order scalar-tensor theories
2020 · Kazufumi Takahashi, Hayato Motohashi · Journal of Cosmology and Astroparticle Physics · 74
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Weakly-coupled stealth solution in scordatura degenerate theory
2020 · Hayato Motohashi, Shinji Mukohyama · Journal of Cosmology and Astroparticle Physics · 74
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Consistency relation for Rp inflation
2015 · Hayato Motohashi · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 72
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Constant-roll inflation in scalar-tensor gravity
2019 · Hayato Motohashi, Alexei A. Starobinsky · Journal of Cosmology and Astroparticle Physics · 67
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Ghost-free theories with arbitrary higher-order time derivatives
2018 · Hayato Motohashi, Teruaki Suyama, et al. · Journal of High Energy Physics · 67
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Works count: 123
Citation count: 5,170
H-index: 41
I10-index: 75
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