Transport coefficients and nonextensive statistics

J.R. Bezerra, R. Silva and J.A.S. Lima

Physica A: Statistical Mechanics and its Applications, 2003, vol. 322, issue C, 256-266

Abstract: We discuss the basic transport phenomena in gases and plasmas obeying the q-nonextensive velocity distribution (power law). Analytical expressions for the thermal conductivity (Kq) and viscosity (ηq) are derived by solving the Boltzmann equation in the relaxation-time approximation. The available experimental results to the ratio Kq/ηq constrains the q-parameter on the interval 0.74⩽q⩽1. In the extensive limiting case, the standard transport coefficients based on the local Gaussian distribution are recovered, and due to a surprising cancellation, the electric conductivity of a neutral plasma is not modified.

Keywords: Transport processes; Nonextensive kinetic theory; Transport coefficients (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:322:y:2003:i:c:p:256-266

DOI: 10.1016/S0378-4371(02)01813-7

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