The Symmetries of Fermion Fluids at Low Dimensions

Details The Symmetries of Fermion Fluids at Low Dimensions The Symmetries of Fermion Fluids at Low Dimensions

2000-09-20

arxiv.org/abs/cond-mat/0009309v1

Physics

Condensed Matter

Strongly Correlated Electrons

submitted to a volume honoring Quin Luttinger

Scientific paper

We point out that the quasiparticle spectrum of the Landau Fermi liquid
theory has an extra $Z_2$ 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.

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