报告题目: |
Axion field theory approach for classification of topological superconductors |
报告人: |
Ying-Fei Gu |
|
Stanford University
|
报告时间: |
2015-08-19 15:00 |
报告地点: |
Conference Hall 322, Science Building, Tsinghua |
主办单位: |
高等研究院 |
简介: |
Time-reversal invariant topological superconductors (TRI TSC) are gapped superconductors with topologically robust gapless modes on the boundary. In the work by X. L. Qi et al, [PRB, 87, 134519(2013)], a topological field theory description was proposed for 3+1-dimensional TRI TSC, which contains an axionic coupling between superconducting phase and electromagnetic field. In my talk, I will describe an argument based on topological response in axion field theory for the classification problem of TRI TSC in general 4k(k-integer) space-time dimensions, e.g., in 3+1 dimension, this argument indicates a Z16 classification.
|
|
