It is recently proposed by Wang et al. [Phys. Rev. B 61, R5090 (2000)] that dephasing of conduction electrons due to zero-point fluctuation of electromagnetic field in a vacuum can well account for the measured saturation of electron dephasing time at (formula presented) in various materials. We point out that this calculation is numerically incorrect, while we also provide arguments showing that zero-point fluctuation of electromagnetic field does not cause any dephasing within this theory of Wang et al.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - 1 Jan 2001|