Corpus ID: 237267286

# Zero Sound And Plasmon Modes For Non-Fermi Liquids

@inproceedings{Mandal2021ZeroSA,
title={Zero Sound And Plasmon Modes For Non-Fermi Liquids},
author={Ipsita Mandal},
year={2021}
}
We derive the quantum Boltzmann equation (QBE) by using generalized Landau-interaction parameters, obtained through the nonequilibrium Green’s function technique. This is a generalization of the usual QBE formalism to non-Fermi liquid (NFL) systems, which do not have well-defined quasiparticles. We apply this framework to a controlled low-energy effective field theory for the Ising-nematic quantum critical point, in order to find the collective excitations of the critical Fermi surface in the… Expand

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