PIRSA:17040022

The chiral anomaly in Dirac-Weyl semimetals.*

Ong, N.P. (2017). The chiral anomaly in Dirac-Weyl semimetals.*. Perimeter Institute. https://pirsa.org/17040022

Ong, Nai Phuan. The chiral anomaly in Dirac-Weyl semimetals.*. Perimeter Institute, Apr. 05, 2017, https://pirsa.org/17040022 

          @misc{ pirsa_PIRSA:17040022,
            doi = {10.48660/17040022},
            url = {https://pirsa.org/17040022},
            author = {Ong, Nai Phuan},
            keywords = {Other},
            language = {en},
            title = {The chiral anomaly in Dirac-Weyl semimetals.*},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {apr},
            note = {PIRSA:17040022 see, \url{https://pirsa.org}}
          }

Nai Phuan Ong Princeton University

DOI 10.48660/17040022
Collection
Talk Type Scientific Series
Subject

Abstract

In 1983, Nielsen and Ninomiya predicted that the Adler-Bell-Jakiw (or chiral) anomaly should be observable in a crystal that has protected Dirac states in the bulk (3+1 D). Following recent progress in the field of Topological Quantum Matter, the anomaly has now been observed, most clearly in the two semimetals Na3Bi and GdPtBi. I will discuss the general problem of realizing Weyl Fermions in semimetals, and explain what the chiral anomaly is in condensed matter. I will remark on its historical context, starting with pion decay. Several tests that support our conclusion will be described.

 

*Supported by the Moore Foundation, ARO and NSF.