# 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…

## References

SHOWING 1-10 OF 30 REFERENCES

Quantum Boltzmann equation of composite fermions interacting with a gauge field.

- Physics, MedicinePhysical review. B, Condensed matter
- 1995

We derive the quantum Boltzmann equation (QBE) of composite fermions at/near the $\nu = 1/2$ state using the non-equilibrium Green's function technique. The lowest order perturbative correction to…

Non-Fermi liquid at the FFLO quantum critical point

- PhysicsPhysical Review B
- 2018

When a 2D superconductor is subjected to a strong in-plane magnetic field, Zeeman polarization of the Fermi surface can give rise to inhomogeneous FFLO order with a spatially modulated gap. Further…

TRANSPORT THEORY FOR ELECTRON-PHONON INTERACTIONS IN METALS

- Physics
- 1964

>By extending Migdal's approximation for electron-phonon interactions in metals to the nonequilibrium case, it is possible to derive a set of transport equations that are exact to order (m/M)/sup…

Quantum phase transitions of metals in two spatial dimensions

- 2010

We present a renormalization-group theory for the onset of Ising-nematic order in a Fermi liquid in two spatial dimensions. This is a quantum phase transition, driven by electron interactions, which…

Scaling behaviour and superconducting instability in anisotropic non-Fermi liquids

- Physics
- 2016

We study the scaling behaviour of the optical conductivity $(\sigma)$, free energy density $(F)$ and shear viscosity of the quantum critical point associated with spin density wave phase transition…

Quantum Phase Transitions of Metals in Two Spatial Dimensions: II. Spin density Wave Order

- Physics
- 2010

We present a field-theoretic renormalization group analysis of Abanov and Chubukov’s model of the spin density wave transition in two dimensional metals. We identify the independent field scale and…

Quantum phase transitions of metals in two spatial dimensions: I. Ising-nematic order

- Physics
- 2010

We present a renormalization group theory for the onset of Ising-nematic order in a Fermi liquid in two spatial dimensions. This is a quantum phase transition, driven by electron interactions, which…

Disorder-driven destruction of a non-Fermi liquid semimetal studied by renormalization group analysis

- Physics
- 2017

We investigate the interplay of Coulomb interactions and short-range-correlated disorder in three-dimensional systems where absent disorder the noninteracting band structure hosts a quadratic band…

Perturbative non-Fermi liquids from dimensional regularization

- Physics
- 2013

We devise a dimensional regularization scheme for quantum field theories with Fermi surface to study scaling behaviour of non-Fermi liquid states in a controlled approximation. Starting from a Fermi…

Hydrodynamic transport in the Luttinger-Abrikosov-Beneslavskii non-Fermi liquid

- Physics
- 2020

We determine the shear viscosity and the dc electrical conductivity of interacting three-dimensional Luttinger semimetals, which have a quadratic band touching point in the energy spectrum, in the…