1.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP112 papers
- Kyoto UniversityJP108 papers
- The University of OsakaJP73 papers
- Institute for Theoretical and Experimental PhysicsRU70 papers
- Nagoya UniversityJP66 papers
- RIKENJP66 papers
- Hiroshima UniversityJP62 papers
- Institute of Space and Astronautical ScienceJP56 papers
- Japan Aerospace Exploration AgencyJP51 papers
- Tohoku UniversityJP51 papers
- University of TsukubaJP49 papers
- Saitama UniversityJP43 papers
41 papers · 1 filter
Radiative neutrino mass model with degenerate right-handed neutrinos
Shoichi Kashiwase, Daijiro Suematsu
The radiative neutrino mass model can relate neutrino masses and dark matter at a TeV scale. If we apply this model to thermal leptogenesis, we need to consider resonant leptogenes…
General form of entropy on the horizon of the universe in entropic cosmology
Nobuyoshi Komatsu, Shigeo Kimura
Entropic cosmology assumes several forms of entropy on the horizon of the universe, where the entropy can be considered to behave as if it were related to the exchange (the transfe…
Supertransmission channel for an intrinsic localized mode in a 1D nonlinear physical lattice
M. Sato, T. Nakaguchi, T. Ishikawa +4
It is well known that a moving intrinsic localized mode (ILM) in a nonlinear physical lattice looses energy because of the resonance between it and the underlying small amplitude p…
Twistor lifts and factorization for conformal maps from a surface to the Euclidean four-space
Kazuyuki Hasegawa, Katsuhiro Moriya
A conformal map from a Riemann surface to the Euclidean four-space is explained in terms of its twistor lift. A local factorization of a differential of a conformal map is obtained…
Non-minimal coupling in Higgs-Yukawa model with asymptotically safe gravity
Kin-ya Oda, Masatoshi Yamada
We study the fixed point structure of the Higgs-Yukawa model, with its scalar being non-minimally coupled to the asymptotically safe gravity, using the functional renormalization g…
Atomistic mechanisms of intermittent plasticity in metals: Dislocation avalanches and defect cluster pinning
Niiyama Tomoaki, Shimokawa Tomotsugu
Intermittent plastic deformation in crystals with power-law behaviors has been reported in previous experimental studies. The power-law behavior is reminiscent of self-organized cr…
Analytic extension of Jorge-Meeks type maximal surfaces in Lorentz-Minkowski 3-space
Shoichi Fujimori, Yu Kawakami, Masatoshi Kokubu +3
The Jorge-Meeks -noid () is a complete minimal surface of genus zero with catenoidal ends in the Euclidean 3-space , which has -rotation sy…
Inflation due to a non-minimal coupling of singlet scalars in the radiative seesaw model
Romy H. S. Budhi, Shoichi Kashiwase, Daijiro Suematsu
The radiative neutrino mass model with inert doublet dark matter is a promising model for the present experimental issues which cannot be explained within the standard model. We st…
A comparison of X-ray stress measurement methods \\based on the fundamental equation
Toshiyuki Miyazaki, Toshihiko Sasaki
Stress measurement methods using X-ray diffraction (XRD methods) are based on so-called fundamental equations. The fundamental equation is described in the coordinate system that b…
Quantum walks on simplicial complexes
Kaname Matsue, Osamu Ogurisu, Etsuo Segawa
We construct a new type of quantum walks on simplicial complexes as a natural extension of the well-known Szegedy walk on graphs. One can numerically observe that our proposing qua…
SPF-CellTracker: Tracking multiple cells with strongly-correlated moves using a spatial particle filter
Osamu Hirose, Shotaro Kawaguchi, Terumasa Tokunaga +6
Tracking many cells in time-lapse 3D image sequences is an important challenging task of bioimage informatics. Motivated by a study of brain-wide 4D imaging of neural activity in C…
Soft X-ray Observation of the Prompt Emission of GRB100418A
Ritsuko Imatani, Hiroshi Tomida, Satoshi Nakahira +7
We have observed the prompt emission of GRB100418A, from its beginning by the MAXI/SSC (0.7-7 keV) on board the International Space Station followed by the Swift/XRT (0.3-10 keV) o…
Lepton number asymmetry via inflaton decay in a modified radiative seesaw model
Shoichi Kashiwase, Daijiro Suematsu
We propose a non-thermal scenario for the generation of baryon number asymmetry in a radiative neutrino mass model which is modified to realize inflation at the early Universe. In…
Reference material for natural radionuclides in glass designed for underground experiments
P. P. Povinec, M. K. Pham, J. Busto +23
A reference material designed for the determination of natural radionuclides in solid samples (glass pellets) is described and the results of certification are presented. The mater…
Functional renormalization group study of the Nambu--Jona-Lasinio model at finite temperature and density in an external magnetic field
Ken-Ichi Aoki, Hidenari Uoi, Masatoshi Yamada
In this study, we investigate the Nambu--Jona-Lasinio (NJL) model at finite temperature and finite density in an external magnetic field using the functional renormalization group.…
Direct detection of singlet dark matter in classically scale-invariant standard model
Kazuhiro Endo, Koji Ishiwata
Classical scale invariance is one of the possible solutions to explain the origin of the electroweak scale. The simplest extension is the classically scale-invariant standard model…
Non-thermal Production of Minimal Dark Matter via Right-handed Neutrino Decay
Mayumi Aoki, Takashi Toma, Avelino Vicente
Minimal Dark Matter (MDM) stands as one of the simplest dark matter scenarios. In MDM models, annihilation and co-annihilation processes among the members of the MDM multiplet are…
Dynamical Semigroups for Unbounded Repeated Perturbation of Open System
Hiroshi Tamura, Valentin Zagrebnov
We consider dynamical semigroups with unbounded Kossakowski-Lindblad-Davies generators which are related to evolution of an open system with a tuned repeated harmonic perturbation.…
Persistent spin helix on a wurtzite ZnO(10-10) surface: First-principles density-functional study
Moh Adhib Ulil Absor, Fumiyuki Ishii, Hiroki Kotaka +1
The persistent spin helix (PSH) that has been widely and exclusively studied in zinc-blende structures is revealed for the first time on the surface of a wurtzite structure. Throug…
Dynamics of an Open System for Repeated Harmonic Perturbation
Hiroshi Tamura, Valentin A. Zagrebnov
We use the Kossakowski-Lindblad-Davies formalism to consider an open system defined as the Markovian extension of one-mode quantum oscillator S, perturbed by a piecewise stationary…
A model realizing inverse seesaw and resonant leptogenesis
Mayumi Aoki, Naoyuki Haba, Ryo Takahashi
We construct a model realizing the inverse seesaw mechanism. The model has two types of gauge singlet fermions in addition to right-handed neutrinos. A required Majorana mass scale…
Scale and electroweak first-order phase transitions
Jisuke Kubo, Masatoshi Yamada
We consider phase transitions in the standard model (SM) without the Higgs mass term, which is coupled through a Higgs portal term to an SM singlet, classically scale-invariant gau…
New Vector-Like Fermions and Flavor Physics
Koji Ishiwata, Zoltan Ligeti, Mark B. Wise
We study renormalizable extensions of the standard model that contain vector-like fermions in a (single) complex representation of the standard model gauge group. There are 11 mode…
X-raying extended emission and rapid decay of short gamma-ray bursts
Yasuaki Kagawa, Daisuke Yonetoku, Tatsuya Sawano +5
Extended emission is a mystery in short gamma-ray bursts (SGRBs). By making time resolved spectral analyses of brightest nine events observed by XRT, we obviously cla…