Publications (191)
Allowed slepton intergenerational mixing in light of light element abundances
Kazunori Kohri, Shingo Ohta, Joe Sato +2
Exponential Quintessence: Analytic Relationship Between the Current Equation of State Parameter and the Potential Parameter
Naoto Maki, Kazunori Kohri
Chasing Gravitational Waves with the Cherenkov Telescope Array
Jarred Gershon Green, Alessandro Carosi, Lara Nava +563
Photon emission from inside the innermost stable circular orbit
Takahisa Igata, Kazunori Kohri, Kota Ogasawara
Precise Measurements of Primordial Power Spectrum with 21 cm Fluctuations
Kazunori Kohri, Yoshihiko Oyama, Toyokazu Sekiguchi +1
Modulated decay in the multi-component Universe
Seishi Enomoto, Kazunori Kohri, Tomohiro Matsuda
Cosmological Constant Problem and Renormalized Vacuum Energy Density in Curved Background
Kazunori Kohri, Hiroki Matsui
Probing Lepton Asymmetry with 21 cm Fluctuations
Kazunori Kohri, Yoshihiko Oyama, Toyokazu Sekiguchi +1
X-Ray Observation of Very High Energy Gamma-Ray Source, HESS J1745-303, with Suzaku
Aya Bamba, Ryo Yamazaki, Kazunori Kohri +4
Hadronic decay of the gravitino in the early universe and its implications to inflation
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi
Possible solution to the $^7$Li problem by the long lived stau
Toshifumi Jittoh, Kazunori Kohri, Masafumi Koike +3
Can we explain AMS-02 antiproton and positron excesses simultaneously by nearby supernovae without pulsars nor dark matter?
Kazunori Kohri, Kunihito Ioka, Yutaka Fujita +1
Primordial Non-Gaussianity $f_{\mathrm{NL}}$ and Anisotropies in Scalar-Induced Gravitational Waves
Jun-Peng Li, Sai Wang, Zhi-Chao Zhao +1
Big-Bang Nucleosynthesis with Unstable Gravitino and Upper Bound on the Reheating Temperature
Kazunori Kohri, Takeo Moroi, Akira Yotsuyanagi
Revisiting Big-Bang Nucleosynthesis Constraints on Dark-Matter Annihilation
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi +1
What we can learn from the spectral index of the tensor mode
Kazunori Kohri, Chia-Min Lin, Tomohiro Matsuda
The hybrid curvaton
Konstantinos Dimopoulos, Kazunori Kohri, Tomohiro Matsuda
Quintessence Cosmology and Varying $α$
Takeshi Chiba, Kazunori Kohri
Superheavy dark matter and IceCube neutrino signals:bounds on decaying dark matter
Carsten Rott, Kazunori Kohri, Seong Chan Park
Testing Seesaw and Leptogenesis via Gravitational Waves: Majorana versus Dirac
Anish Ghoshal, Kazunori Kohri, Nimmala Narendra
The Detected Stochastic Gravitational Waves and Subsolar-Mass Primordial Black Holes
Keisuke Inomata, Kazunori Kohri, Takahiro Terada
Inflaton as the Affleck-Dine Baryogenesis Field in Hilltop Supernatural Inflation
Chia-Min Lin, Kazunori Kohri
On the waterfall behavior in hybrid inflation
Hideo Kodama, Kazunori Kohri, Kazunori Nakayama
Structure of Dark Matter Halos in Warm Dark Matter models and in models with Long-Lived Charged Massive Particles
Ayuki Kamada, Naoki Yoshida, Kazunori Kohri +1
Impacts of new small-scale N-body simulations on dark matter annihilations constrained from cosmological 21cm line observations
Nagisa Hiroshima, Kazunori Kohri, Toyokazu Sekiguchi +1
Primordial Black Hole Dark Matter and LIGO/Virgo Merger Rate from Inflation with Running Spectral Indices: Formation in the Matter- and/or Radiation-Dominated Universe
Kazunori Kohri, Takahiro Terada
Nonthermal Emission Associated with Strong AGN Outbursts at the Centers of Galaxy Clusters
Yutaka Fujita, Kazunori Kohri, Ryo Yamazaki +1
The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
Rouzbeh Allahverdi, Mustafa A. Amin, Asher Berlin +23
Big Bang Nucleosynthesis with Long Lived Charged Massive Particles
Kazunori Kohri, Fumihiro Takayama
More hilltop inflation models
Kazunori Kohri, Chia-Min Lin, David H. Lyth
Gravitational wave search through electromagnetic telescopes
Asuka Ito, Kazunori Kohri, Kazunori Nakayama
Axion-Like Particles and Recent Observations of the Cosmic Infrared Background Radiation
Kazunori Kohri, Hideo Kodama
Ambiguity in running spectral index with an extra light field during inflation
Kazunori Kohri, Tomohiro Matsuda
New cosmological constraints on primordial black holes
B. J. Carr, Kazunori Kohri, Yuuiti Sendouda +1
Cosmological Constraints on Neutrino Injection
Toru Kanzaki, Masahiro Kawasaki, Kazunori Kohri +1
Dependence of accessible dark matter annihilation cross-sections on the density profiles of dwarf spheroidal galaxies with the Cherenkov Telescope Array
Nagisa Hiroshima, Masaaki Hayashida, Kazunori Kohri
Black hole formation and slow-roll inflation
Kazunori Kohri, David H. Lyth, Alessandro Melchiorri
Neutralino Dark Matter from Heavy Gravitino Decay
Kazunori Kohri, Masahiro Yamaguchi, Jun'ichi Yokoyama
Cosmological boost factor for dark matter annihilation at redshifts of $z=10$-$100$ using the power spectrum approach
Ryuichi Takahashi, Kazunori Kohri
A unified model for the time variability of the Crab: the dispersion measure variation and the $γ$-ray flare of the nebula
Nagisa Hiroshima, Kazunori Kohri
Breakdown of Hawking Evaporation opens new Mass Window for Primordial Black Holes as Dark Matter Candidate
Valentin Thoss, Andreas Burkert, Kazunori Kohri
Phenomenology of Gravitational Aether as a solution to the Old Cosmological Constant Problem
Siavash Aslanbeigi, Georg Robbers, Brendan Z. Foster +2
Observable induced gravitational waves from an early matter phase
Laila Alabidi, Kazunori Kohri, Misao Sasaki +1
Observable Spectra of Induced Gravitational Waves from Inflation
Laila Alabidi, Kazunori Kohri, Misao Sasaki +1
The Inflaton that Could : Primordial Black Holes and Second Order Gravitational Waves from Tachyonic Instability induced in Higgs-$R^2$ Inflation
Dhong Yeon Cheong, Kazunori Kohri, Seong Chan Park
Possible Origin of Rapid Variability of Gamma-Ray Bursts due to Convective Energy Transfer in Hyperaccretion Disks
Norita Kawanaka, Kazunori Kohri
Testing scenarios of primordial black holes being the seeds of supermassive black holes by ultracompact minihalos and CMB $μ$-distortions
Kazunori Kohri, Tomohiro Nakama, Teruaki Suyama
Production and dilution of gravitinos by modulus decay
Kazunori Kohri, Masahiro Yamaguchi, Jun'ichi Yokoyama
Cosmic Rays from Dark Matter Annihilation and Big-Bang Nucleosynthesis
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri +2
Probing primordial black holes with anisotropies in stochastic gravitational-wave background
Sai Wang, Valeri Vardanyan, Kazunori Kohri
Revisiting the limits on dark matter annihilation cross-section and decay lifetime in light of electron and positron fluxes
Nagisa Hiroshima, Kazunori Kohri, Partha Kumar Paul +1
Big-bang nucleosynthesis with a long-lived CHAMP including He4 spallation process
Toshifumi Jittoh, Kazunori Kohri, Masafumi Koike +4
Big-Bang Nucleosynthesis and Hadronic Decay of Long-Lived Massive Particles
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi
Inflation models selected by the swampland distance conjecture with the Lyth bound
Yuma S. Furuta, Yuta Hamada, Kazunori Kohri
Testing multi-field inflation with LiteBIRD
Ryusuke Jinno, Kazunori Kohri, Takeo Moroi +2
Neutrino-Dominated Accretion and Supernovae
Kazunori Kohri, Ramesh Narayan, Tsvi Piran
New constraints on axion with gamma-ray observations of the Crab Nebula
Kazunori Kohri, Haruki Takahashi
Right-handed sneutrino dark matter and big-bang nucleosynthesis
Koji Ishiwata, Masahiro Kawasaki, Kazunori Kohri +1
Study of primordial non-Gaussianity $f_{\mathrm{NL}}$ and $g_{\mathrm{NL}}$ with the cross-correlations between the scalar-induced gravitational waves and the cosmic microwave background
Zhi-Chao Zhao, Sai Wang, Jun-Peng Li +1
Electroweak Vacuum Collapse induced by Vacuum Fluctuations of the Higgs Field around Evaporating Black Holes
Kazunori Kohri, Hiroki Matsui
Revisiting Big-Bang Nucleosynthesis Constraints on Long-Lived Decaying Particles
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi +1
Preheating and the non-gaussianity of the curvature perturbation
Kazunori Kohri, David H. Lyth, Cesar A. Valenzuela-Toledo
NANOGrav 15-year gravitational-wave signals from binary supermassive black-holes seeded by primordial black holes, and implications for the origins of Little Red Dots
Mikage U. Kobayashi, Kazunori Kohri
130GeV gamma-ray line through axion conversion
Masato Yamanaka, Kazunori Kohri, Kunihito Ioka +1
Evolution of Synchrotron X-rays in Supernova Remnants
Ryoko Nakamura, Aya Bamba, Tadayasu Dotani +3
High-energy Neutrinos from Multi-body Decaying Dark Matter
Nagisa Hiroshima, Ryuichiro Kitano, Kazunori Kohri +1
Cosmological Constraints on Gravitino LSP Scenario with Sneutrino NLSP
Toru Kanzaki, Masahiro Kawasaki, Kazunori Kohri +1
Long Lived Charged Massive Particles and Big Bang Nucleosynthesis
Kazunori Kohri, Fumihiro Takayama
Current status of space gravitational wave antenna DECIGO and B-DECIGO
Seiji Kawamura, Masaki Ando, Naoki Seto +84
Gamma-ray spectrum of RX J1713.7-3946 in the Fermi era and future detection of neutrinos
Ryo Yamazaki, Kazunori Kohri, Hideaki Katagiri
On the stability of Dark Energy with Mass-Varying Neutrinos
Niayesh Afshordi, Matias Zaldarriaga, Kazunori Kohri
The N2HDM, Entropy Production and Stochastic Gravitational Waves
Arnab Chaudhuri, Kazunori Kohri
Non-Gaussianity in the inflating curvaton
Seishi Enomoto, Kazunori Kohri, Tomohiro Matsuda
TeV Gamma-Rays from Old Supernova Remnants
Ryo Yamazaki, Kazunori Kohri, Aya Bamba +3
Neutrino Signals from Annihilating/Decaying Dark Matter in the Light of Recent Measurements of Cosmic Ray Electron/Positron Fluxes
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri +1
Can neutrino-cooled accretion disk be an origin of gamma-ray bursts?
Kazunori Kohri, Shin Mineshige
Consistency Relations for Large Field Inflation
Takeshi Chiba, Kazunori Kohri
Big-bang nucleosynthesis with sub-GeV massive decaying particles
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi +2
EMPRESS. XV. A New Determination of the Primordial Helium Abundance Suggesting a Moderately Low $Y_\mathrm{P}$ Value
Hiroto Yanagisawa, Masami Ouchi, Akinori Matsumoto +18
X-ray Spectroscopy of the Mixed Morphology Supernova Remnant W28 with XMM-Newton
Ryoko Nakamura, Aya Bamba, Manabu Ishida +6
Delta-N Formalism for Curvaton with Modulated Decay
Kazunori Kohri, Chia-Min Lin, Tomohiro Matsuda
CMB bounds on disk-accreting massive Primordial Black Holes
Vivian Poulin, Pasquale D. Serpico, Francesca Calore +2
Can decaying particle explain cosmic infrared background excess?
Kazunori Kohri, Takeo Moroi, Kazunori Nakayama
Solving the cosmic lithium problems with primordial late-decaying particles
Daniel Cumberbatch, Kazuhide Ichikawa, Masahiro Kawasaki +3
PBH abundance from random Gaussian curvature perturbations and a local density threshold
Chul-Moon Yoo, Tomohiro Harada, Jaume Garriga +1
Primordial black holes save $R^2$ inflation
Xinpeng Wang, Kazunori Kohri, Tsutomu T. Yanagida
Restricting quark matter models by gravitational wave observation
Hajime Sotani, Kazunori Kohri, Tomohiro Harada
Simple Analytical Solutions of the Wheeler-DeWitt Equation in the Classical Hamilton-Jacobi Limit
Naoto Maki, Chia-Min Lin, Kazunori Kohri
Constraints on primordial black holes from Galactic gamma-ray background
B. J. Carr, Kazunori Kohri, Yuuiti Sendouda +1
Slow-roll corrections in multi-field inflation: a separate universes approach
Mindaugas KarÄiauskas, Kazunori Kohri, Taro Mori +1
Semianalytic Calculation of Gravitational Wave Spectrum Nonlinearly Induced from Primordial Curvature Perturbations
Kazunori Kohri, Takahiro Terada
Multi-field effects in a simple extension of $R^2$ inflation
Taro Mori, Kazunori Kohri, Jonathan White
Inflation, baryogenesis and gravitino dark matter at ultra low reheat temperatures
Kazunori Kohri, Anupam Mazumdar, Narendra Sahu
Gravitational Wave Physics and Astronomy in the nascent era
Makoto Arimoto, Hideki Asada, Michael L. Cherry +50
Formation of hot spots around small primordial black holes
Minxi He, Kazunori Kohri, Kyohei Mukaida +1
Constraints on Primordial Black Holes
Bernard Carr, Kazunori Kohri, Yuuiti Sendouda +1
Affleck-Dine baryogenesis with modulated reheating
Kohei Kamada, Kazunori Kohri, Shuichiro Yokoyama
Solar-Mass Primordial Black Holes Explain NANOGrav Hint of Gravitational Waves
Kazunori Kohri, Takahiro Terada
Prospective constraints on the primordial black hole abundance from the stochastic gravitational-wave backgrounds produced by coalescing events and curvature perturbations
Sai Wang, Takahiro Terada, Kazunori Kohri
Monte Carlo Study of Electron and Positron Cosmic-Ray Propagation with the CALET Spectrum
Katsuaki Asano, Yoichi Asaoka, Yosui Akaike +4