2019/10/15 by Ng, Tai-Kai
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)
paper · doi:10.48550/arxiv.1910.06602
We study in this paper the general properties of a many body system of fermions in arbitrary dimensions assuming that the \em momentum of individual fermions are good quantum numbers of the system. We call these systems k-Fermi liquids. We show how Fermi liquid, Luttinger liquid (or Fermi liquid with exclusion statistics) and spin-charge separation arises from this framework. Two exactly solvable k-Fermi liquid models with spin-charge separation are discussed as examples.