PIRSA:22080002

Exact results for metallic quantum critical points

Goldman, H. (2022). Exact results for metallic quantum critical points. Perimeter Institute. https://pirsa.org/22080002

Goldman, Hart. Exact results for metallic quantum critical points. Perimeter Institute, Aug. 11, 2022, https://pirsa.org/22080002 

          @misc{ pirsa_PIRSA:22080002,
            doi = {10.48660/22080002},
            url = {https://pirsa.org/22080002},
            author = {Goldman, Hart},
            keywords = {Condensed Matter},
            language = {en},
            title = {Exact results for metallic quantum critical points},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {aug},
            note = {PIRSA:22080002 see, \url{https://pirsa.org}}
          }

Hart Goldman Massachusetts Institute of Technology (MIT)

Talk numberPIRSA:22080002
DOI10.48660/22080002
Collection
Talk Type Scientific Series
Subject

Abstract

I discuss how exact, non-perturbative results can be obtained for both optical transport and static susceptibilities in “Hertz-Millis” theories of Fermi surfaces coupled to critical bosons. Such models possess a large emergent symmetry and anomaly structure, which we leverage to fix these quantities. In particular, I will show that in the infrared limit, the boson self energy at zero wave vector is a constant independent of frequency, and the real part of the optical conductivity is purely a delta function Drude peak with no other corrections. I will also obtain exact relations between Fermi liquid parameters as the critical point is approached from the disordered phase. 

Zoom Link:  https://pitp.zoom.us/j/93340611986?pwd=cisrZmFxcEVWZVdrT2tMRVZiVTdRQT09