Zobrazeno 1 - 10
of 282
pro vyhledávání: '"Hajime Otsuka"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-16 (2024)
Abstract 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 untwisted moduli, we find that three-form fluxes satisfying th
Externí odkaz:
https://doaj.org/article/b69efdffeb204c37b2590a86b3119231
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-37 (2024)
Abstract We study the realization of spontaneous CP violation through moduli stabilization. In modular flavor models, the source of CP violation is the vacuum expectation values of the complex structure moduli of toroidal compact space. We demonstrat
Externí odkaz:
https://doaj.org/article/f351eb0ae7264d359f72de80ed6eb9fa
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-40 (2024)
Abstract We study the well-known type IIA intersecting D-brane models on the T 6 / ℤ 2 × ℤ 2 ′ $$ {T}^6/\left({\mathbb{Z}}_2\times {\mathbb{Z}}_2^{\prime}\right) $$ orientifold via a machine-learning approach. We apply several autoencoder mode
Externí odkaz:
https://doaj.org/article/99f88e6e8d094882a108112430e7e51f
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-28 (2024)
Abstract We study the modular symmetry in heterotic string theory on Calabi-Yau threefolds. In particular, we examine whether moduli-dependent holomorphic Yukawa couplings are described by modular forms in the context of heterotic string theory with
Externí odkaz:
https://doaj.org/article/2d406b7b423d4fe7b1ba5612ec01e8de
Autor:
Hajime Otsuka, Ryo Yokokura
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-24 (2024)
Abstract We study primordial electromagnetic fields in effective actions of string theory. In contrast to a conventional scenario of producing primordial electromagnetic fields induced by the axion inflation, we deal with the Dirac-Born-Infeld action
Externí odkaz:
https://doaj.org/article/382779443c10482a9a4a4de1c2a1022a
Publikováno v:
Nuclear Physics B, Vol 1004, Iss , Pp 116579- (2024)
We derive verifiable two-zero textures in the framework of a three-loop induced neutrino mass model applying a modular A4 symmetry for the lepton sector. Interestingly, the neutrino mass structure is determined by assignments of the right-handed char
Externí odkaz:
https://doaj.org/article/8fe9f40c6da642aa9f2f778b11f98064
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-50 (2024)
Abstract We study structures of solutions for SUSY Minkowski F-term equations on two toroidal orientifolds with h 2,1 = 1. Following our previous study [1], with fixed upper bounds of a flux D3-brane charge N flux, we obtain a whole Landscape and a d
Externí odkaz:
https://doaj.org/article/157cc93f2ade49d19f0044049a6d8b39
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-23 (2024)
Abstract We propose an upper bound on the Atiyah-Singer index in the effective action of string theory. For E 8 × E 8 ′ $$ {E}_8^{\prime } $$ and SO(32) heterotic string theories on smooth Calabi-Yau threefolds with line bundles, we find that the
Externí odkaz:
https://doaj.org/article/6e33c280ccaa43ed826032a79a9807cb
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-23 (2024)
Abstract We propose an interesting assignment of positive modular weights for fields in a modular non-Abelian discrete flavor symmetry. By this assignment, we can construct inverse seesaw and linear seesaw models without any additional symmetries whi
Externí odkaz:
https://doaj.org/article/fb60a490ed904b93809828d15bc49903
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-23 (2024)
Abstract Sequestering is a promising mechanism in 4D string models to reconcile high-scale inflation with low-energy supersymmetry. In this scenario the MSSM lives on branes at singularities and it is sequestered from the sources of supersymmetry bre
Externí odkaz:
https://doaj.org/article/6c08617fe47949bf83e916ef48356591