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
27 papers · 1 filter
New features of the maximal abelian projection
V. G. Bornyakov, M. I. Polikarpov, G. Schierholz +2
After fixing the Maximal Abelian gauge in SU(2) lattice gauge theory we decompose the nonabelian gauge field into the so called monopole field and the modified nonabelian field wit…
Mixing-induced CP asymmetry in B-> K* gamma decays with perturbative QCD approach
M. Matsumori, A. I. Sanda
The mixing-induced CP asymmetries in B-> K* gamma -> K_S pi^0 gamma and B-> K* gamma -> K_L pi^0 gamma are expected to be small within the standard model. So they are among the mos…
Dark world and baryon asymmetry from a common source
Daijiro Suematsu
We study generation of baryon number asymmetry and both abundance of dark matter and dark energy on the basis of global symmetry and its associating flat directions in a supersymme…
Nonabelian Discrete Family Symmetry to Soften the SUSY Flavor Problem and to Suppress Proton Decay
Yuji Kajiyama, Etsuko Itou, Jisuke Kubo
Family symmetry could explain large mixing of the atmospheric neutrinos. The same symmetry could explain why the flavor changing current processes in supersymmetric standard models…
Gauge invariant 'monopoles' and color confinement mechanism
Tsuneo Suzuki, Katsuya Ishiguro, Yoshifumi Nakamura +1
The dual Meissner effect is described and numerically observed in a gauge-invariant way in lattice Monte-Carlo simulations of pure SU(2) QCD. A gauge-invariant monopole-like quanti…
Singlino dominated LSP as CDM candidate in supersymmetric models with an extra U(1)
Daijiro Suematsu
We consider a singlino dominated neutralino in supersymmetric models with an extra U(1). In case both the term and also the mass are generated by the vacuum expectat…
Nonthermal production of baryon and dark matter
Daijiro Suematsu
We study nonthermal production of baryon and dark matter. If we extend the MSSM by introducing some singlet chiral superfields so as to enlarge the conserved global symmetry, the a…
A Random Point Field related to Bose-Einstein Condensation
H. Tamura, K. R. Ito
The random point field which describes the position distribution of the system of ideal boson gas in a state of Bose-Einstein condensation is obtained through the thermodynamic lim…
Double poles in Lattice QCD with mixed actions
Maarten Golterman, Taku Izubuchi, Yigal Shamir
We consider effects resulting from the use of different discretizations for the valence and the sea quarks, considering Wilson and/or Ginsparg--Wilson fermions. We assume that such…
Towards SU(2) invariant formulation of the monopole confinement mechanism
Katsuya Ishiguro, Yoshihiro Mori, Yoshifumi Nakamura +5
The type of the vacuum is studied numerically in the maximally Abelian (MA) gauge and in the Landau (LA) gauge of SU(2) gluodynamics. The type of the vacuum is determined by a rati…
Homotopy on spatial graphs and the Sato-Levine invariant
Thomas Fleming, Ryo Nikkuni
Edge-homotopy and vertex-homotopy are equivalence relations on spatial graphs which are generalizations of Milnor's link-homotopy. We introduce some edge (resp. vertex)-homotopy in…
Absolute Rate, Evolving Luminosity function, and Evolving Jet Opening Angle Distribution for Long Gamma-Ray Bursts
Tatsushi Matsubayashi, Ryo Yamazaki, Daisuke Yonetoku +2
Using the luminosity function and the apparent GRB rate inferred from the spectral peak energy-luminosity relation, we investigate the absolute GRB formation rate, taking into acco…
Two non-nilpotent linear transformations that satisfy the cubic -Serre relations
Tatsuro Ito, Paul Terwilliger
Let denote an algebraically closed field with characteristic 0, and let denote a nonzero scalar in that is not a root of unity. Let denote the unital associative…
Vacuum type of SU(2) gluodynamics in maximally Abelian and Landau gauges
M. N. Chernodub, Katsuya Ishiguro, Yoshihiro Mori +5
The vacuum type of SU(2) gluodynamics is studied using Monte-Carlo simulations in maximally Abelian (MA) gauge and in Landau (LA) gauge, where the dual Meissner effect is observed…
The Kaon B-parameter from Quenched Domain-Wall QCD
Y. Aoki, T. Blum, N. H. Christ +8
We present numerical results for the kaon B-parameter, B_K, determined in the quenched approximation of lattice QCD. Our simulations are performed using domain-wall fermions and th…
Dihedral Flavor Symmetry from Dimensional Deconstruction
Jisuke Kubo
Extra dimension deconstructed on a closed chain has naturally the symmetry of a regular polygon, the dihedral symmetry D_N. We assume that the fields are irreducible representation…
Chemo-Sensitive Running Droplet
Yutaka Sumino, Masaharu Nagayama, Hiroyuki Kitahata +4
Chemical control of the spontaneous motion of a reactive oil droplet moving on a glass substrate under an aqueous phase is reported. Experimental results show that the self-motion…
The Reionization History and Early Metal Enrichment inferred from the Gamma-Ray Burst Rate
T. Murakami, D. Yonetoku, M. Umemura +2
Based on the gamma-ray burst (GRB) event rate at redshifts of , which is assessed by the spectral peak energy-to-luminosity relation recently found by Yonetoku et…
The role of the double pole in lattice QCD with mixed actions
Maarten Golterman, Taku Izubuchi, Yigal Shamir
We investigate effects resulting from the use of different discretizations for the valence and the sea quarks in lattice QCD, considering Wilson and/or Ginsparg-Wilson fermions. We…
Entropy of spatial monopole currents in pure SU(2) QCD at finite temperature
M. N. Chernodub, Katsuya Ishiguro, Tsuneo Suzuki
We study properties of space-like monopole trajectories in the Maximal Abelian gauge of quenched SU(2) QCD at the finite temperature. We concentrate on infrared monopole clusters w…
A possible observational evidence for angular distribution of opening half-angle of GRB jets
Daisuke Yonetoku, Ryo Yamazaki, Takashi Nakamura +1
We propose a method to estimate the pseudo jet opening half-angle of GRBs using the spectral peak energy ($\Ep$)--peak luminosity relation (so called Yonetoku relation) as well as…
Neutrino texture saturating the CP asymmetry
Takayasu Baba, Daijiro Suematsu
We study a neutrino mass texture which can explain the neutrino oscillation data and also saturate the upper bound of the CP asymmetry in the leptogenesis. We consider the th…
A gauge-invariant object in non-Abelian gauge theory
M. N. Chernodub
We propose a nonlocal definition of a gauge-invariant object in terms of the Wilson loop operator in a non--Abelian gauge theory. The trajectory is a closed curve defined by an (un…
S_3 Flavor Symmetry and Leptogenesis
Takeshi Araki, Jisuke Kubo, Emmanuel A. Paschos
We consider leptogenesis in a minimal S_3 extension of the standard model with an additional Z_2 symmetry in the leptonic sector. It is found that the CP phase appearing in the neu…