FieldsMeasurement, instrumentation, and techniques

NEWFermi Machine — Quantum ManyBody Solver Derived from Mapping between Noninteracting and Strongly Correlated Fermions
20241029
Strongly interacting quantum manybody states can be mapped to noninteracting quantum states, enabling a new quantum neural network called the Fermi machine to solve strongly correlated electron problems.Electron states in condensed matter
Measurement, instrumentation, and techniques

A Neural Thermometer for Predicting Phase Transitions of Unknown Systems
2024911
A novel convolutional neural network predicts phase transition temperatures from spin configurations without prior information about order parameters, paving the way for the discovery of new materials in condensed matter physics.
Measurement, instrumentation, and techniques
Statistical physics and thermodynamics

PICKUPExploring Recent Advances in the Physics of Biofluid Locomotion
2023128
This Special Topics Edition of the JPSJ describes the latest advances in the field of biofluid locomotion, shedding light on the underlying physics behind the movement of organisms that swim and fly.
Crossdisciplinary physics and related areas of science and technology
Electromagnetism, optics, acoustics, heat transfer, and classical and fluid mechanics
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Measurement, instrumentation, and techniques
Statistical physics and thermodynamics
Structure and mechanical and thermal properties in condensed matter

Discovering a Local Fluctuation Theorem with Machine Learning
20231020
A groundbreaking study reveals a new timelocal fluctuation theorem using machine learning, revolutionizing our understanding of deterministic nonequilibrium steady state systems.
Fundamental Theory of Condensed Matter Physics, Statistical Mechanics, Fluid Dynamics,
Measurement, instrumentation, and techniques
Statistical physics and thermodynamics

PICKUPHigh Magnetic Field as a Tool for Discovery in Condensed Matter Physics
20221213
The Journal of the Physical Society of Japan highlights in this special topic recent advances in modern physics that have been realized with the generation of pulsed high magnetic fields.
Dielectric, optical, and other properties in condensed matter
Electron states in condensed matter
Electronic structure and electrical properties of surfaces and nanostructures
Electronic transport in condensed matter
Magnetic properties in condensed matter
Measurement, instrumentation, and techniques
Structure and mechanical and thermal properties in condensed matter

HighPrecision Observation of Cosmic Gammaray Sources with the GRAINE Telescope
2022224
A gammaray telescope developed jointly by universities in Japan promises an unprecedented imaging resolution that could help distinguish gammaray sources observed in our galaxy.
Measurement, instrumentation, and techniques

Will Magnetic Properties near Pressure Induced Quantum Critical Phenomena Be Elucidated?
2021726
Hiraoka et al. developed an opposed anviltype pressure cell for magnetization measurements which combines a large sample space and is capable of generating higher pressures up to 6.3 GPa.
Magnetic properties in condensed matter
Measurement, instrumentation, and techniques

Detecting Weak Quantum Magnetism at High Pressures
2021615
Improved device and method to measure magnetization under high pressure was developed, which brings a quick tool to screen phases of interest in weakly magnetic materials including quantum magnets.
Magnetic properties in condensed matter
Measurement, instrumentation, and techniques

Multiple Superconducting Phases in UTe2: A Complex Analogy to Superfluid Phases of 3He
202133
In quantum liquids, large differences are observed owing to differences in quantum statistics. The physical properties of liquid ^{3}He (Fermion) and ^{4}He (Boson) are considerably different at low temperatures. After the discovery of superconductivity in electron (i.e., Fermion) systems, a similar pairing ordered state was expected for ^{3}He. Remarkably, the observed ordered state of ^{3}He was more surprising than expected, multiple superfluid phases in the T–P phase diagram. The origin of the multiple phases was attributed to ferromagnetic interactions in the pwave symmetry state.
Measurement, instrumentation, and techniques
Statistical physics and thermodynamics