3 papers
hep-th2025
Response of Kaluza-Klein mass spectrum to deformations of rugby-ball compact space
Hajime Otsuka, Yutaka Sakamura
We investigate the response of the Kaluza-Klein (KK) mass spectrum to various deformations of the rugby-ball background in 6-dimensional supergravity. We derived the mode equations…
hep-th2024
Pauli-Villars regularization of Kaluza-Klein Casimir energy with Lorentz symmetry
Hiroki Matsui, Yutaka Sakamura
The Pauli-Villars regularization is appropriate to discuss the UV sensitivity of low-energy observables because it mimics how the contributions of new particles at high energies ca…
hep-th2024
Induced moduli oscillation by radiation and space expansion in a higher-dimensional model
Hajime Otsuka, Yutaka Sakamura
We investigate the cosmological expansion of the 3D space in a 6D model compactified on a sphere, beyond the 4D effective theory analysis. We focus on a case that the initial tempe…