The Symmetries of Fermion Fluids at Low Dimensions
arXiv:cond-mat/0009309
Abstract
We point out that the quasiparticle spectrum of the Landau Fermi liquid theory has an extra symmetry, local in momentum space, which is not generic to the Hamiltonian with interactions. Thus the Fermi liquid is in this sense a (quantum) zero-temperature critical point.
submitted to a volume honoring Quin Luttinger