Cross-disciplinary physics and related areas of science and technology

Electron states in condensed matter

Elementary particles, fields, and strings

Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling

Statistical physics and thermodynamics

Superconductivity

This Journal of the Physical Society of Japan Special Topics edition explores how physics and machine learning complement each other and can solve unresolved problems in physics.

Electronic transport in condensed matter

This paper presents a unified theoretical description for the topological Hall effect, covering the entire region from strong- to weak-coupling, extending its picture beyond the Berry phase.

Electron states in condensed matter

Electronic transport in condensed matter

The realization of an excitonic insulator can help in the establishment of a new electronic state in condensed matter physics, one that has the potential to exhibit novel electric, magnetic, and optical responses beyond those of conventional materials.

Statistical physics and thermodynamics

Structure and mechanical and thermal properties in condensed matter

Quantum states can be categorized as hyperuniform or multifractal based on electronic characteristics. This study demonstrates that bosonic quasicrystalline systems exhibit hyperuniform or multifractal quantum states.

Cross-disciplinary physics and related areas of science and technology

Electronic transport in condensed matter

Magnetic properties in condensed matter

Careful measurements were conducted on the hexagonal magnet GdGa₂ to reveal the experimental signatures of ultrasmall spin cycloids and of a potential Néel-type skyrmion lattice phase induced by a magnetic field.