We study the inflation scenarios, in the framework of superstring theory, where the inflaton is an axion producing the adiabatic curvature perturbati…

The Next-to-Minimal Supersymmetric Standard Model (NMSSM) provides a natural framework to realize a low-scale supersymmetric (SUSY) model, where a si…

We study the structure of Yukawa matrices derived from the supersymmetric Yang-Mills theory on magnetized orbifolds, which can realize the observed q…

We perform lattice simulations of two-dimensional supersymmetric Yang-Mills theory with sixteen supercharges with a lattice action which has two exac…

Based on the result of classification in our previous work, we exhaustively investigate Yukawa sector of $U(8)$ model on magnetized orbifolds $T^{2}/…

We propose a new model of the D-term hybrid inflation in the framework of supergravity. Although our model introduces, analogously to the conventiona…

In this paper, we generalize Walcher's computation of the open Gromov-Witten invariants of the quintic hypersurface to Fano and Calabi-Yau projective…

We explore a model based on the classically-scale invariant standard model (SM) with a strongly coupled vector-like dynamics, which is called hyperco…

We propose a new model of single-field D-term inflation in supergravity, where the inflation is driven by a single modulus field which transforms non…

We propose a new type of moduli stabilization scenario where the supersymmetric and supersymmetry-breaking minima are degenerate at the leading level…

We investigate a gauge theory realization of non-Abelian discrete flavor symmetries and apply the gauge enhancement mechanism in heterotic orbifold m…

On the basis of quantum field theory, we consider a unified description of various processes accompanied by neutrinos, namely weak decays and oscilla…

The authors are grateful to T. Fujii, N. Furukawa, N. Hatano, D. S. Hirashima, K.-I. Imura, T. Kato, S. Kurihara, S. Miyashita, T. Oka, Masahiro Sato, Masatoshi Sato, A. Shitade, and K. Ueda for fruitful discussions and stimulating comments. J.G. is…

We investigate the magnetic response in the quantized spin Hall (SH) phase of layered-honeycomb lattice system with intrinsic spin-orbit coupling lam…

We present neutrino mass matrix textures in a minimal framework of the type-I seesaw mechanism where two right-handed Majorana neutrinos are introduc…

We propose an algebraic lattice supersymmetry formulation which has an exact supersymmetry on the lattice. We show how lattice version of chiral cond…

In supersymmetric models with Dirac neutrinos, the lightest sneutrino can be an excellent thermal dark matter candidate when the soft sneutrino trili…

We study general class of small-field axion inflations which are the mixture of polynomial and sinusoidal functions suggested by the natural and axio…

We study the CP-violating phase of the quark sector in the $U(8)$ flavor model on $T^2/Z_N \, (N=2,3,4,6)$ with non-vanishing magnetic fluxes, where …

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