Time evolution of excitations in normal Fermi liquids

Time evolution of excitations in normal Fermi liquids

Y. Pavlyukh,1,* A. Rubio,2 and J. Berakdar1 1Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle, Germany 2Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento de Fı́sica de Materiales, Universidad del Paı́s Vasco, CFM CSIC-UPV/EHU-MPC and DIPC, Avenida Tolosa 72, E-20018 San Sebastián, Spain (Received 27 December 2012; revised manuscript recei...

Bosonization of the low energy excitations of Fermi liquids.

We bosonize the low energy excitations of Fermi Liquids in any number of dimensions in the limit of long wavelengths. The bosons are coherent superposition of electron-hole pairs and are related with the displacements of the Fermi Surface in some arbitrary direction. A coherent-state path integral for the bosonized theory is derived and it is shown to represent histories of the shape of the Fer...

Fermi Liquids and Luttinger Liquids

Damping of long-wavelength collective excitations in quasi-onedimensional Fermi liquids

The imaginary part of the exchange-correlation kernel in the longitudinal current-current response function of a quasi-onedimensional Fermi liquid is evaluated by an approximate decoupling in the equation of motion for the current density, which accounts for processes of excitation of two particle-hole pairs. The two-pair spectrum determines the intrinsic damping rate of long-wavelength collect...

Bosonization of Fermi Liquids

We consider systems of non-relativistic, interacting electrons at finite density and zero temperature in d = 2, 3, ... dimensions. Our main concern is to characterize those systems that, under the renormalization flow, are driven away from the Landau Fermi liquid (LFL) renormalization group fixed point. We are especially interested in understanding under what circumstances such a system is a Ma...