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Title: Heat and work fluctuations for a harmonic oscillator
Authors: Sabhapandit, Sanjib
Issue Date: Feb-2012
Publisher: American Physical Society
Citation: Physical Review E, 2012, Vol.85, p021108
Abstract: The formalism of Kundu [J. Stat. Mech.1742-546810.1088/1742-5468/2011/03/P03007 P03007 (2011)], for computing the large deviations of heat flow in harmonic systems, is applied to the case of single Brownian particle in a harmonic trap and coupled to two heat baths at different temperatures. The large-τ form of the moment generating function <e-λQ>≈g(λ)exp[τμ(λ)], of the total heat flow Q from one of the baths to the particle in a given time interval τ, is studied and exact explicit expressions are obtained for both μ(λ) and g(λ). For a special case of the single particle problem that corresponds to the work done by an external stochastic force on a harmonic oscillator coupled to a thermal bath, the large-τ form of the moment generating function is analyzed to obtain the exact large deviation function as well as the complete asymptotic forms of the probability density function of the work.
Description: Open Access.
ISSN: 1539-3755
1550-2376 (Online)
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Copyright: 2012 American Physical Society
Appears in Collections:Research Papers (TP)

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