3 papers
hep-ph2026
Polarized Nucleon as a Topological Dipole
Kenji Fukushima, Tomoya Uji
We show that a polarized nucleon generically carries a dipole distribution of topological charge density. This topological dipole follows robustly from the definition of the topolo…
hep-ph2025
Pseudogauge ambiguity in the distributions of energy density, pressure, and shear force inside the nucleon
Kenji Fukushima, Tomoya Uji
We study the spatial distributions of pressure, energy density, and shear forces inside the nucleon within the two-flavor Skyrme model including vector mesons. This framework has t…
hep-ph2024
Photon polarization tensor at finite temperature and density in a magnetic field
Kenji Fukushima, Yoshimasa Hidaka, Tomoya Uji
We present analytical and numerical calculations for the photon polarization tensor at finite temperature and density in a constant magnetic field. We first discuss the tensor deco…