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Quantum fluctuations in mesoscopic resistance- inducatance-capacitance electric circuits at finite temperature

Liang Xian-ting1,2 and Fan Hong-yi2

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By using the charge and current in a quantization resistance-inductance-capacitance (RLC) electric circuit, we construct a pair of canonical variables. Using this pair of variables and the thermal field dynamics, we obtain the fluctuations of charge and current in the RLC electric circuit at finite temperatures. It is shown that the fluctuations increase with increasing temperature and decrease with prolonging of time.


PACS

03.65.-w Quantum mechanics

05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion

Subjects

Statistical physics and nonlinear systems

Quantum information and quantum mechanics

Dates

Issue 6 (June 2001)

Received 15 October 2000, in final form 5 February 2001



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