Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-09-05
Phys. Rev. B 79, 045117 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages
Scientific paper
10.1103/PhysRevB.79.045117
Marginal Fermi liquid was originally introduced as a phenomenological description of the cuprates in a part of the metallic doping range which appears to be governed by fluctuations due to a quantum-critical point. An essential result due to the form of the assumed fluctuation spectra is that the large inelastic quasiparticle relaxation rate near the Fermi-surface is proportional to the energy measured from the chemical potential, $\tau_i^{-1}\propto\epsilon$. We present a microscopic long-wavelength derivation of the hydrodynamic properties in such a situation by an extension of the procedure that Eliashberg used for the derivation of the hydrodynamic properties of a Landau-Fermi-liquid. In particular, the density-density and the current-current correlations and the relation between the two are derived, and the connection to microscopic calculations of the frequency dependence of the optical conductivity with an additional fermi-liquid correction factor shown to follow. The method used here may be necessary, quite generally, for the correct hydrodynamic theory for any problem of quantum-critical fluctuations in fermions.
Shekhter Arkady
Varma Chandra M.
No associations
LandOfFree
Long Wavelength Correlations and Transport in a Marginal Fermi Liquid does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Long Wavelength Correlations and Transport in a Marginal Fermi Liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long Wavelength Correlations and Transport in a Marginal Fermi Liquid will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-4738