Electron mass shift in nonthermal systems

Details Electron mass shift in nonthermal systems Electron mass shift in nonthermal systems

2008-01-24

arxiv.org/abs/0801.3810v1

Physics

Quantum Physics

23 pages, 5 figures

Scientific paper

10.1088/0953-4075/41/12/125001

The electron mass is known to be sensitive to local fluctuations in the electromagnetic field, and undergoes a small shift in a thermal field. It was claimed recently that a very large electron mass shift should be expected near the surface of a metal hydride [{\it Eur. Phys. J. C}, {\bf 46} 107 (2006)]. We examine the shift using a formulation based on the Coulomb gauge, which leads to a much smaller shift. The maximization of the electron mass shift under nonequilibrium conditions seems nonetheless to be an interesting problem. We consider a scheme in which a current in a hollow wire produces a large vector potential in the wire center. Fluctuations in an LC circuit with nearly matched loss and gain can produce large current fluctuations; and these can increase the electron mass shift by orders of magnitude over its room temperature value.

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