Hoạt động khoa học
Seminar
|
Seminar Trung tâm Vật lý quốc tế: | |
| Tên báo cáo | Bosonization of Fermi surface: the method of coadjoint orbits |
|---|---|
| Người trình bày | GS. Đàm Thanh Sơn |
| Cơ quan | Đại học Chicago, Mỹ |
| Ngày | Thứ Sáu, 31-07-2026 |
| Giờ | 10:00 AM |
| Địa điểm | Phòng 315, Viện Vật lý, Số 10, Đào Tấn, Giảng Võ, Hà Nội |
| Tóm tắt | Fermi liquid theory is a cornerstone of condensed matter physics. The theory of Fermi liquid, constructed by Landau in 1958, is formulated in terms of a kinetic equation rather than an action principle. We describe a new method that leads to a field-theoretical reformulation of Landau Fermi liquid theory. In this approach, the low-energy states of a Fermi liquid is a coadjoint orbit of the group of canonical transformations. The Berry phase that the Fermi surface acquires while changing its shape is related to the Kirillov-Kostant-Souriau symplectic form. We show that the resulting local effective field theory captures both linear and nonlinear effects in Landau’s Fermi liquid theory. Possible extensions and applications of the theory are described. |
| Người chủ trì | Đinh Văn Trung |