Pirooznia, P.; Kopietz, P. - In: The European Physical Journal B - Condensed Matter and … 58 (2007) 3, pp. 291-296
We calculate the damping γ<Subscript>q</Subscript> of collective density oscillations (zero sound) in a one-dimensional Fermi gas with dimensionless forward scattering interaction F and quadratic energy dispersion k<Superscript>2</Superscript> / 2 m at zero temperature. Using standard many-body perturbation theory, we obtain γ<Subscript>q</Subscript> from the...</subscript></superscript></subscript>