Comment on "Spin-Gradient-Driven Light Amplification in a Quantum Plasma"

Abstract

A comment on the Letter by S. Braun, F. A. Asenjo and S. M. Mahajan, Phys. Rev. Lett., 109, 175003 (2012). We show that recent arguments for light amplification driven by inhomogeneous quantum spin fields in low temperature electron plasmas in metals are invalid. In essence, a neglect of Pauli `blocking' led the authors to over-estimate the effects of intrinsic spin.

2 pages. Published version of Comment along with an addendum, updated references

References in corpus (2)

• Dynamics of spin 1/2 quantum plasmas
• On quantum plasma: a plea for a common sense

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