Brownian motion of a charged test particle in vacuum between two conducting plates

Details Brownian motion of a charged test particle in vacuum between two conducting plates Brownian motion of a charged test particle in vacuum between two conducting plates

2004-12-02

arxiv.org/abs/quant-ph/0412010v1

Phys.Rev. D70 (2004) 125006

Physics

Quantum Physics

10 pages, Revtex4

Scientific paper

10.1103/PhysRevD.70.125006

The Brownian motion of a charged test particle caused by quantum electromagnetic vacuum fluctuations between two perfectly conducting plates is examined and the mean squared fluctuations in the velocity and position of the test particle are calculated. Our results show that the Brownian motion in the direction normal to the plates is reinforced in comparison to that in the single-plate case. The effective temperature associated with this normal Brownian motion could be three times as large as that in the single-plate case. However, the negative dispersions for the velocity and position in the longitudinal directions, which could be interpreted as reducing the quantum uncertainties of the particle, acquire positive corrections due to the presence of the second plate, and are thus weakened.

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