PIRSA:14050095

Wilsonian and Large N Approaches to Non-Fermi Liquids

Fitzpatrick, L. (2014). Wilsonian and Large N Approaches to Non-Fermi Liquids. Perimeter Institute. https://pirsa.org/14050095

Fitzpatrick, Liam. Wilsonian and Large N Approaches to Non-Fermi Liquids. Perimeter Institute, May. 26, 2014, https://pirsa.org/14050095 

          @misc{ pirsa_PIRSA:14050095,
            doi = {10.48660/14050095},
            url = {https://pirsa.org/14050095},
            author = {Fitzpatrick, Liam},
            keywords = {},
            language = {en},
            title = {Wilsonian and Large N Approaches to Non-Fermi Liquids},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {may},
            note = {PIRSA:14050095 see, \url{https://pirsa.org}}
          }

Liam Fitzpatrick Boston University

DOI 10.48660/14050095
Collection
Talk Type Conference

Abstract

We study the problem of metals near a quantum critical point using a local Wilsonian effective field theory of Fermi surface fermions coupled to massless boson (i.e. order parameter) fields, in particular in a large N limit where the boson is matrix-valued. We focus on regions of parameter space where the boson dresses the fermions into a non-Fermi liquid while the bosons are approximately controlled by the Wilson-Fisher fixed point.