8 citations · 13 across the 5 of their papers we have counts for
6 papers
Stringy Constraints on Modular Flavor Models
Keiya Ishiguro, Takafumi Kai, Tatsuo Kobayashi +1
We investigate stringy constraints on moduli spaces in modular flavor models by analyzing moduli-dependent threshold corrections in heterotic string vacua. While moduli play a cruc…
Classification of Modular Symmetries in Type IIB Flux Landscape
Keiya Ishiguro, Takafumi Kai, Tatsuo Kobayashi +2
In this work, we study modular symmetries in type IIB flux landscape by investigating symplectic basis transformations of period vectors on toroidal orbifolds. To fix explicit cycl…
Stabilization of a twisted modulus on a mirror of rigid Calabi-Yau manifold
Keiya Ishiguro, Takafumi Kai, Hajime Otsuka
We study the stabilization of a twisted modulus in Type IIB flux compactifications on a mirror of the rigid Calabi-Yau threefold. By analyzing the effective action of twisted and u…
Flux Landscape with Enhanced Symmetry Not on Elliptic Points
Keiya Ishiguro, Takafumi Kai, Tatsuo Kobayashi +1
We study structures of solutions for SUSY Minkowski F-term equations on two toroidal orientifolds with . Following our previous study \cite{Ishiguro:2020tmo}, with fi…
Upper bound on the Atiyah-Singer index from tadpole cancellation
Keiya Ishiguro, Takafumi Kai, Satsuki Nishimura +2
We propose an upper bound on the Atiyah-Singer index in the effective action of string theory. For and heterotic string theories on smooth Calabi-Y…
Flavor, CP and Metaplectic Modular Symmetries in Type IIB Chiral Flux Vacua
Takafumi Kai, Keiya Ishiguro, Hiroshi Okada +1
We examine symmetries of chiral four-dimensional vacua of Type IIB flux compactifications with vanishing superpotential . We find that the supersymmetric MSSM-lik…