Hongwei Yu et al 2008 J. Phys. A: Math. Theor. 41 335402 doi:10.1088/1751-8113/41/33/335402
Hongwei Yu1,2, Xiangyun Fu1,2 and Puxun Wu3
Show affiliationsWe study the Brownian motion of a charged test particle driven by quantum electromagnetic fluctuations in the vacuum region near a non-dispersive and non-absorbing dielectric half-space and calculate the mean squared fluctuations in the velocity of the test particle. Our results show that a nonzero susceptibility of the dielectrics has its imprints on the velocity dispersions of the test particles. The most noteworthy feature in sharp contrast to the case of an idealized perfectly conducting interface is that the velocity dispersions in the parallel directions are no longer negative and do not die off in time, suggesting that the potentially problematic negativeness of the dispersions in those directions in the case of perfect conductors is just a result of our idealization and does not occur for real material boundaries.
Issue 33 (22 August 2008)
Received 30 May 2008, in final form 24 June 2008
Published 17 July 2008
Hongwei Yu et al 2008 J. Phys. A: Math. Theor. 41 335402
J Bouttier and E Guitter 2009 J. Phys. A: Math. Theor. 42 465208
C Bervillier 2009 J. Phys. A: Math. Theor. 42 485202
E M Cherry and F H Fenton 2008 New J. Phys. 10 125016
J F Coudert and V Rat 2008 J. Phys. D: Appl. Phys. 41 205208
J J Kolodziej et al 2007 Nanotechnology 18 135302
Ying Sun et al 2007 Nanotechnology 18 505704
Ralf Peter Brinkmann 2009 J. Phys. D: Appl. Phys. 42 194009
Satoshi Ohya and Makoto Sakamoto 2009 J. Phys. A: Math. Theor. 42 275301
Wei-Chuan Fang et al 2007 Nanotechnology 18 485716