5 papers
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…
Energy-momentum tensor form factors and spin density distribution in the nucleon calculated in a quantized Skyrme model with vector mesons
Kenji Fukushima, Tomoya Uji
We investigate energy-momentum tensor (EMT) form factors and the spatial spin density distribution in the nucleon within a framework of the quantized Skyrme model with vector meson…
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…
Magnetic-type Love number differentiating quark stars from neutron stars
Kenji Fukushima, Josuke Minamiguchi, Tomoya Uji
The quark star (QS) is a hypothetical and yet undiscovered stellar object, and its existence would mark a paradigm shift in research on nuclear and quark matter. Although compactne…
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…