4th International BSM Workshop at Shanghai Jiao Tong University: Advancements in Physics Beyond the Standard Model
The 4th International BSM Workshop at Shanghai Jiao Tong University focused on advancements in physics beyond the Standard Model. Hosted by the Tsung-Dao Lee Institute (TDLI) from August 25 to 27, 2025, the workshop was organized in collaboration with Beihang University and the National Key Laboratory of Dark Matter Physics. The event attracted over 60 participants, including experts, scholars, postdoctoral researchers, and students from notable institutions such as Peking University, Nanjing University, Sun Yat-sen University, KAIST, the University of Tokyo, and Tohoku University.
Opening Ceremony
At the opening ceremony, Professor Yuichiro Nakai from TDLI stressed the importance of international collaboration and the contributions of young researchers in advancing the field of physics.
Scientific Agenda
The scientific agenda featured a variety of topics related to physics beyond the Standard Model (BSM). Presentations included:
- Multi-axion dynamics, which discussed the evolution of topological defects and new directions in axion cosmology.
- A new mechanism for producing heavy dark matter, proposing that cosmic phase transitions could serve as a natural source of heavy dark matter and potential gravitational waves.
- Scattering entanglement entropy, which explored the relationship between the dynamics of electroweak phase transitions and entanglement entropy in scattering processes. This discussion suggested that extremizing entanglement entropy might represent a fundamental principle in nature.
Workshop Interactions
Throughout the workshop, participants engaged in discussions surrounding model building, numerical simulations, experimental design, and observational strategies. These interactions highlighted the need for interdisciplinary approaches and international cooperation to connect theoretical insights with experimental applications.
Conclusion
The organization of this workshop not only promoted academic exchange and knowledge sharing in BSM physics but also provided young researchers with opportunities to present their work and establish professional relationships. The TDLI aims to continue fostering international collaboration and working with the global community to advance the frontiers of particle physics.
(Source: Tsung-Dao Lee Institute, Shanghai Jiao Tong University)
