Comment on "plasma oscillations and nonextensive statistics".

The paper authored by Lima et al. [Phys. Rev. E 61, 3260 (2000)] has discussed the dispersion relation and Landau damping of a Langmuir wave in the context of the nonextensive statistics proposed by Tsallis. However, the results obtained in this paper are not appropriate. In this comment on the paper we shall derive the correct analytic formulas for both the dispersion relation and Landau damping in the Tsallis formalism. We hope that this comment will be useful in providing the correct results.