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9 papers · 1 filter
Model independent constraints of the averaged neutrino masses revisited
Takeshi Fukuyama, Hiroyuki Nishiura
Averaged neutrino masses defined by $\la m_ν\ra_{ab} \equiv\left| \sum_{j=1}^{3}U_{aj}U_{bj}m_j\right|$ () are reanalyzed using up-to-date observed MNS parameters and ne…
Wormholes in higher dimensional space-time: Exact solutions and their linear stability analysis
Takashi Torii, Hisa-aki Shinkai
We derive the simplest traversable wormhole solutions in -dimensional general relativity, assuming static and spherically symmetric spacetime with a ghost scalar field. This is…
Asymptotically AdS Charged Black Holes in String Theory with Gauss-Bonnet Correction in Various Dimensions
Nobuyoshi Ohta, Takashi Torii
We study charged black hole solutions in Einstein-Maxwell-Gauss-Bonnet theory with the dilaton field which is the low-energy effective theory of the heterotic string. The spacetime…
Numerical Fitting-based Likelihood Calculation to Speed up the Particle Filter
Tiancheng Li, Shudong Sun, Juan M. Corchado +2
The likelihood calculation of a vast number of particles is the computational bottleneck for the particle filter in applications where the observation information is rich. For fast…
Yukawaon Model with Anomaly Free Set of Quarks and Leptons in a U(3) Family Symmetry
Yoshio Koide, Hiroyuki Nishiura
In the so-called "yukawaon" model, the (effective) Yukawa coupling constants are given by vacuum expectation values (VEVs) of scalars (yukawaons) with …
Hierarchical masses and universal mixing in quark-lepton mass matrices
Takeshi Fukuyama, Hiroyuki Nishiura
The universality hypothesis for quark and lepton mixing matrices (CKM and MNS) is further developed. This hypothesis explains why the CKM is almost diagonal whereas the MNS is almo…