Shearing the Vacuum - Quantum Friction

Details Shearing the Vacuum - Quantum Friction Shearing the Vacuum - Quantum Friction

1997-07-18

arxiv.org/abs/cond-mat/9707190v2

Physics

Condensed Matter

21 pages, Latex, 8 figures, submitted to J. Phys. C: Solid State Physics

Scientific paper

10.1088/0953-8984/9/47/001

We consider two perfectly smooth featureless surfaces at T=0, defined only by their respective dielectric functions, separated by a finite distance, and ask the question whether they can experience any friction when sheared parallel to their interface. We find large frictional effects comparable to everyday frictional forces provided that the materials have resistivities of the order of 1 m-Ohm and that the surfaces are in close proximity. The friction depends solely on the reflection coefficients of the surfaces to electromagnetic waves and its detailed behaviour with shear velocity and separation is dictated by the dispersion of the reflectivity with frequency.

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