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Quantum Physics

arXiv:0711.2203 (quant-ph)
[Submitted on 14 Nov 2007 (v1), last revised 16 Nov 2007 (this version, v2)]

Title:Switching effect upon the quantum Brownian motion near a reflecting boundary

Authors:Masafumi Seriu, Chun-Hsien Wu
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Abstract: The quantum Brownian motion of a charged particle in the electromagnetic vacuum fluctuations is investigated near a perfectly reflecting flat boundary, taking into account the smooth switching process in the measurement. Constructing a smooth switching function by gluing together a plateau and the Lorentzian switching tails, it is shown that the switching tails have a great influence on the measurement of the Brownian motion in the quantum vacuum. Indeed, it turns out that the result with a smooth switching function and the one with a sudden switching function are qualitatively quite different. It is also shown that anti-correlations between the switching tails and the main measuring part plays an essential role in this switching effect. The switching function can also be interpreted as a prototype of an non-equilibrium process in a realistic measurement, so that the switching effect found here is expected to be significant in actual applications in vacuum physics.
Comments: 12 pages, 2 figures This version is just to correct the author-list
Subjects: Quantum Physics (quant-ph); General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:0711.2203 [quant-ph]
  (or arXiv:0711.2203v2 [quant-ph] for this version)
  https://doi.org/10.48550/arXiv.0711.2203
Journal reference: Physical Review A77, 022107 (2008)
Related DOI: https://doi.org/10.1103/PhysRevA.77.022107

Submission history

From: Masafumi Seriu [view email]
[v1] Wed, 14 Nov 2007 14:06:24 UTC (93 KB)
[v2] Fri, 16 Nov 2007 01:43:46 UTC (93 KB)
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