- Letter
Collective modes in two-dimensional non-Fermi liquids
Phys. Rev. B 111, L161108 – Published 8 April, 2025
DOI: https://doi.org/10.1103/PhysRevB.111.L161108
Abstract
This Letter addresses the problem of constructing a proper bosonized description of the collective modes in strongly interacting (non-)Fermi liquids which is specific to two spatial dimensions. Although, in a mild form, this subtlety exists in the Fermi liquid as well, the discussion focuses on the effects of long-ranged and/or retarded interactions which can completely destroy the fermionic quasiparticles. The present analysis provides a further insight into the nature and properties of the collective bosonic modes in such systems.
