University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Monday, November 24th 2014
1:00 pm:
CM Journal Club in 210 Tate
Speaker: Jiashen Cai
Subject: Fermi liquid and non-Fermi liquid

Much of the conventional condensed matter physics is based on a picture of quasiparticles. A phenomenological theory of using quasiparticles to describe interacting fermions developed by Landau was successful for many years. But recent years, more and more metals can not be explained by Landau's theory. In this talk, I will first review Landau's Fermi liquid theory and discuss the diagrammatic derivation of the theory. After that, I will use RG to give another interpretation of Fermi liquid theory. In the end, I will briefly discuss about non-Fermi liquid which can not be described by the quasiparticle picture. [1]Shankar, R. "Renormalization-group approach to interacting fermions." Reviews of Modern Physics 66.1 (1994): 129.

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