Osamu Fukushima is a theoretical physicist specializing in high-energy physics, quantum field theory, and integrable field theories. He is currently a special postdoctoral researcher (SPDR) at RIKEN iTHEMS. His primary research interests include non-equilibrium quantum dynamics and exotic phenomena in quantum field theories. He received his Bachelor of Science in physics and Ph.D. in Science from Kyoto University in 2019 and 2024, respectively. From 2021 to 2024, he was awarded a research fellowship (DC1) by the Japan Society for the Promotion of Science (JSPS).
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Higher-Form Symmetry and Eigenstate Thermalization Hypothesis
Osamu Fukushima
The eigenstate thermalization hypothesis (ETH) is a successful framework providing criteria for thermalization in isolated quantum systems. Although numerical and theoretical analyses support the ETH as a fundamental mechanism for explaining thermalization in diverse systems, it remains a challenge to analytically identify whether particular systems satisfy the ETH. In quantum many-body systems and quantum field theories, phenomena that violate the ETH are expected to imply nontrivial thermalization processes, and are...
