# General constraints on metals

### APA

Else, D. (2021). General constraints on metals. Perimeter Institute. https://pirsa.org/21010004

### MLA

Else, Dominic. General constraints on metals. Perimeter Institute, Jan. 11, 2021, https://pirsa.org/21010004

### BibTex

@misc{ pirsa_PIRSA:21010004, doi = {10.48660/21010004}, url = {https://pirsa.org/21010004}, author = {Else, Dominic}, keywords = {Condensed Matter}, language = {en}, title = {General constraints on metals}, publisher = {Perimeter Institute}, year = {2021}, month = {jan}, note = {PIRSA:21010004 see, \url{https://pirsa.org}} }

Dominic Else Perimeter Institute for Theoretical Physics

## Abstract

Metals are ubiquitous in nature. One would like to determine the effective field theory that describe the low-energy physics of a metal. Many materials are successfully described by the so-called "Fermi liquid theory", but there is also much interest in "non-Fermi liquid metals" that evade such a description.

In this talk, I will present a very general perspective on metals that strongly constrains the possible effective field theories. The discussion is based on powerful theoretical concepts such as emergent symmetries and anomalies. From this perspective, combined with experimental observations, one can derive strong and unexpected conclusions about the nature of a particular kind of non-Fermi liquid metal, the "strange metal" observed in doped cuprates.