Brownian motion of a charged test particle near a reflecting boundary at finite temperature

Details Brownian motion of a charged test particle near a reflecting boundary at finite temperature Brownian motion of a charged test particle near a reflecting boundary at finite temperature

2006-02-20

arxiv.org/abs/hep-th/0602195v1

JHEP 0602 (2006) 058

Physics

High Energy Physics

High Energy Physics - Theory

11 pages,no figures, Revtex4

Scientific paper

10.1088/1126-6708/2006/02/058

We discuss the random motion of charged test particles driven by quantum electromagnetic fluctuations at finite temperature in both the unbounded flat space and flat spacetime with a reflecting boundary and calculate the mean squared fluctuations in the velocity and position of the test particle. We show that typically the random motion driven by the quantum fluctuations is one order of magnitude less significant than that driven by thermal noise in the unbounded flat space. However, in the flat space with a reflecting plane boundary, the random motion of quantum origin can become much more significant than that of thermal origin at very low temperature.

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