Scientific Activities
Seminars
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Seminar of International Centre of Physics: | |
| Title | Derivation of $Phi^4$ classical field theory from many-body quantum mechanics |
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| Speaker | Prof. Phan Thanh Nam |
| Affiliation | Ludwig Maximilian University of Munich |
| Date | Tuesday, 08-09-2026 |
| Time | 10:00 AM |
| Location | Room 315, 10 Dao Tan, Giang Vo, Ha Noi |
| Abstract | We will discuss a rigorous derivation of the classical $Phi^4$ measure as a semiclassical limit of the quantum Gibbs state for an interacting Bose gas at just above the critical temperature of Bose–Einstein condensation. The proof combines techniques from variational principles, correlation inequalities, and stochastic quantization. The talk is based on earlier joint work with Mathieu Lewin and Nicolas Rougerie, and recent joint work with Rongchan Zhu and Xiangchan Zhu. |
| Host person | Đinh Văn Trung |