■Preface
What Remains Unchanged, What Changes, and What Needs Changing
Shigeo Ohara ...... 561

■Overview Articles
Physics and Chemistry of Tritium
Tetsuo Tanabe ...... 564

■Researches
Fracton Topological Phases and New Type of Symmetries
Hiromi Ebisu, Masazumi Honda, and Taiichi Nakanishi ...... 574

Master Field Simulation of 2＋1 and 2＋1＋1 Flavor Lattice QCD toward Search for New Physics beyond the Standard Model
Ken-Ichi Ishikawa, Naoya Ukita, Yoshinobu Kuramashi, and Takeshi Yamazaki ...... 579

Theory of Electric Multipoles Formed by Double Majorana Kramers Pairs―Surface Spin Current Generation through Coupling with Dynamic Strain
Yuki Yamazaki, Shingo Kobayashi, and Ai Yamakage ...... 584

Ising Model to Explore Adatom Configurations on Semiconductor Surfaces
Akira Kusaba ...... 589

■One Hundred and Fifty Years of the Physical Society of Japan......594

■The Path to History: One Hundred and Fifty Years of the Physical Society of Japan......595

■JPSJ Selected Papers in the Latest Issue......599

■PTEP Selected Papers in the Latest Issue......604

■Book Reviews......606

■Letters and Comments......607