Seminar
＜3/2023＞- Date
- 3月10日(金) 13:30-
- Speaker
- Zebin Qiu（東京大学大学院理学系研究科）
- Title
- Chiral Torsional Effect and other assorted chiral phenomena
In the wake of studies on the chiral magnetic effect, multiple kindred chiral transport phenomena have been revealed, highlighting the relation to the underlying chiral anomaly. Instead of a magnetic field, we consider a rather novel probe of the spacetime torsion, i.e., the anti-symmetric part of the affine connection, and study the current driven by torsion known as the chiral torsional effect (CTE). We generalized the calculation of CTE to finite temperature, density, and curvature in torsional gravity theory. Our results substantiate the relation between the CTE and the Nieh-Yan anomaly. Also analyzed is the interplay between torsion and external electromagnetic fields, whose result is analogous to the axion electrodynamics that effectively captures several chiral transport phenomena.
[1] Phys. Rev. D 102, 016001 (2022).
[2] ArXiv: 2004.11899.