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

Abstract

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 collective density fluctuations, which is calculated and contrasted with a result previously obtained for a clean Luttinger liquid.

9 pages, no figures, Physica B in press

References in corpus (1)

• Luttinger model approach to interacting one-dimensional fermions in a harmonic trap

Cited by in corpus (4)

• Dynamic structure factor of Luttinger liquids with quadratic energy dispersion and long-range interactions
• Damping of zero sound in Luttinger liquids
• Possible evidence of non-Fermi liquid behavior from quasi-one-dimensional indium nanowires
• Tunneling effects on impurity spectral function in coupled asymmetric quantum wires