Landau-Fermi liquids without quasiparticles

Abstract

Landau-Fermi liquid theory is conventionally believed to hold whenever the interacting single-particle density of states develops a $\delta$-like component at the Fermi surface, which is associated with quasiparticles. Here we show that a microscopic justification can be actually achieved under more general circumstances, even in case coherent quasiparticles are totally missing and the interacting single-particle density of states vanishes at the chemical potential as consequence of a pole singularity in the self-energy.

9 pages

References in corpus (3)

• Berry Curvature, Triangle Anomalies, and the Chiral Magnetic Effect in Fermi Liquids
• Luttinger's Theorem and Bosonization of the Fermi Surface
• Topological interpretation of Luttinger theorem

Cited by in corpus (4)

• Luttinger's theorem in presence of Luttinger surfaces
• Edge zeros and boundary spinons in topological Mott insulators
• Spin density wave, Fermi liquid, and fractionalized phases in a theory of antiferromagnetic metals using paramagnons and bosonic spinons
• Nodal Spectral Functions Stabilized by Non-Hermitian Topology of Quasiparticles