activity
20242026
most citedPseudogauge ambiguity in the distributions of energy density, pressure, and shear force inside the nucleon

3 citations · 6 across the 6 of their papers we have counts for

collaborators

7 papers

hep-ph2026

Energy-momentum tensor at small from gravitational transverse-momentum distributions

Tomoya Uji

We investigate the momentum-space mechanical properties of small- gluons and sea quarks using gravitational transverse-momentum distributions (gravitational TMDs). For gluons, w…

hep-ph2026

Chiral anomaly and nucleon spin decomposition in the chiral quark soliton model

Josuke Minamiguchi, Tomoya Uji

We investigate how the chiral anomaly influences the decomposition of nucleon spin between quark spin and orbital motion. We extend the chiral quark soliton model by including a fl…

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-ph2026★ 1 cited

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…

astro-ph.HE2025

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…

hep-ph2025★ 3 cited

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★ 2 cited

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…