Siyang Wan
My name is Siyang Wan (万思扬) 
0009-0008-1919-4446. I am a 1th year PhD student major in Physics, at Tsinghua University.
I was very fortunate to be advised by Prof. Ning Chen (陈宁) during my undergraduate years, and is now spending my PhD years in Prof. Zhong-Zhi Xianyu (鲜于中之)'s research team.
Research Experience
- In summer 2023, I joined Prof. Raúl Briceño's research team at UC Berkeley, studying the role of three-body system in quantum computations of scattering observables. My project was to study the relativistic 3-body scattering amplitude in 1-dimension and to seek trimers under the φb threshold. Under Raúl's guidance, I derived the integral equation of the scattering amplitude above the φb threshold, and solved it using Python. I then read Raúl's previous paper on the relativistic 3-body scattering amplitudes (arXiv:2303.04394 [nucl-th]), learned the numerical methods introduced in it, and applied them to my program. In the end, I extended the solution below the φb threshold to study whether bound states exist, equivalently speaking, to seek for poles of the relativistic 3-body scattering amplitude below the φb threshold. I analyzed the singularities and branch cuts of the exchange propagator and the 2-body scattering amplitude on the momentum complex plane, and found that a new bound state (trimer) irrelevant to the Efimov effect exists in 1-dim., while the Efimov effect does not exist.
Education
Undergraduate | 2021.9. - 2025.6. | Nankai University- Major: Physics
- Earned Credits: 124.5 Cumulative Weighted Average: 86.18/100 GPA: 3.51/4
- Major: Physics
- Earned Credits: 12.0 One Pass and Three A+
- Major: Physics