Comment on "Spin Contribution to the Ponderomotive Force in a Plasma"
Abstract
Several years ago, G. Brodin, A. P. Misra, and M. Marklund considered "Spin Contribution to the Ponderomotive Force in a Plasma" Phys. Rev. Lett. 105, 105004 (2010). They applied a two fluid model of electron gas where spin-up and spin-down electrons are considered as two different species. Their approach to this problem appears to be in disagreement with the Pauli equation. The correct model is presented in this comment.
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