Fermi Liquids are characterized by several important properties:
Quasiparticles: These are excitations in the system that behave like non-interacting particles with renormalized parameters. Fermi Surface: The momentum distribution of electrons forms a well-defined surface in momentum space. Low-Temperature Behavior: The specific heat and magnetic susceptibility of Fermi Liquids vary linearly with temperature at low temperatures. Landau Parameters: These parameters describe the interaction between quasiparticles, essential for predicting physical properties.