88 citations · 1.1k across the 91 of their papers we have counts for
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Wavefunctions on magnetized branes in the conifold
Hiroyuki Abe, Akane Oikawa, Hajime Otsuka
We study wavefunctions on D-branes with magnetic fluxes in the conifold. Since some supersymmetric embeddings of D-branes on the geometry are known, we con…
New potentials for string axion inflation
Tatsuo Kobayashi, Akane Oikawa, Hajime Otsuka
We propose a new type of axion inflation with complex structure moduli in the framework of type IIB superstring theory compactified on Calabi-Yau manifold. The inflaton is identifi…
Axion inflation with cross-correlated axion isocurvature perturbations
Kenji Kadota, Tatsuo Kobayashi, Hajime Otsuka
We study the inflation scenarios, in the framework of superstring theory, where the inflaton is an axion producing the adiabatic curvature perturbations while there exists another…
Gauge coupling unification in SO(32) heterotic string theory with magnetic fluxes
Hiroyuki Abe, Tatsuo Kobayashi, Hajime Otsuka +2
We study heterotic string theory on torus with magnetic fluxes. Non-vanishing fluxes can lead to non-universal gauge kinetic functions for $SU(3) \times SU(2) \times U(1)_…
Particle physics and cosmology with high-scale SUSY breaking in five-dimensional supergravity models
Hajime Otsuka
We discuss a high-scale SUSY breaking scenario with the wino dark matter in the five-dimensional supergravity model on . The extra U(1) symmetries broken by the orbifold p…
Moduli rolling to a natural MSSM with gravitino dark matter
Hajime Otsuka
We propose the gravitino dark matter in the gravity mediated supersymmetry breaking scenario. The mass hierarchies between the gravitino and other superparticles can be achieved by…
Realistic three-generation models from SO(32) heterotic string theory
Hiroyuki Abe, Tatsuo Kobayashi, Hajime Otsuka +1
We search for realistic supersymmetric standard-like models from SO(32) heterotic string theory on factorizable tori with multiple magnetic fluxes. Three chiral ganerations of quar…