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Unformatted text preview: Fermi liquid theory Concept of Landau's Fermi liquid theory elementary excitations of interacting Fermions are described by almost independent fermionic quasiparticles state of Fermi liquid described simply by quasiparticle distribution Phenomenological Theory by Landau energy functional: deviation from ground state ground state distribution filled Fermi sea spin index Fermi liquid theory effective quasiparticle spectrum: bare quasiparticle spectrum: Fermi velocity: density of states at : Fermi volume conserved effective mass Fermi liquid theory couplings: symmetric (charge) antisymmetric (spin) spherical symmetry: Legendre Polynomials Landau parameters: charge Fermi liquid theory couplings: symmetric (charge) antisymmetric (spin) spherical symmetry: Legendre Polynomials Landau parameters: charge spin Fermi liquid theory  physical properties specific heat: compressibility: spin susceptibility: change of Fermi volume spin splitting of Fermi sea T thermal softening of Fermi surface Fermi liquid theory...
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This note was uploaded on 10/04/2011 for the course PHYS fs11 taught by Professor Sigrist during the Spring '11 term at Swiss Federal Institute of Technology Zurich.
 Spring '11
 Sigrist

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