Quantum corrections to microscopic diffusion constants

Details Quantum corrections to microscopic diffusion constants Quantum corrections to microscopic diffusion constants

2003-02-18

arxiv.org/abs/astro-ph/0302353v1

Astron.Astrophys. 402 (2003) 29-36

Astronomy and Astrophysics

Astrophysics

8 pages, 5 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20030230

We review the state of the art regarding the computation of the resistance coefficients in conditions typical of the stellar plasma, and compare the various results studying their effect on the solar model. We introduce and discuss for the first time in an astrophysical context the effect of quantum corrections to the evaluation of the resistance coefficients, and provide simple yet accurate fitting formulae for their computation. Although the inclusion of quantum corrections only weakly modifies the solar model, their effect is growing with density, and thus might be of relevance in case of denser objects like, e.g., white dwarfs.

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