Axions, Weyl and Beyond

Topological Fermi-liquid theory: Dynamics of collective modes and their instabilities in Weyl metals (Role of emergent axions in interacting Weyl metals)

Sep 1, 2023, 9:00 AM

45m

The Westin Josun Busan (Busan, South Korea)

Speaker

Prof. Ki-Seok Kim (POSTECH)

Description

1. Introduction of topological classification of electronic band structure based on historical perspectives: Paper reviews
   2.Emergent axions in ferromagnetic Weyl metals, antiferromagnetic topological insulators, and superconducting Weyl metals: From microscopic lattice models to effective field theories with symmetry breaking ➔ Novel non-equilibrium phase transitions
2. Introduction of Berry curvature into Landau’s Fermi-liquid theory = Topological Fermi-liquid theory (Haldane): Dynamics of l=1 & l=2 collective modes and their instabilities in interacting Weyl metals
3. Role of effective axion dynamics in potential instabilities of topological Fermi liquid theory: Generalization of composite Fermion theory in two spatial dimensions (From EM CS + gravitational CS + Wen-Zee CS to EM theta + gravitational theta + mixed anomaly theta terms)