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Title: Fluctuation theorem in quantum heat conduction
Authors: Saito, Keiji
Dhar, Abhishek
Issue Date: Oct-2007
Publisher: The American Physical Society
Citation: Physical Review Letters, 2007, Vol.99, 180601
Abstract: We consider steady-state heat conduction across a quantum harmonic chain connected to reservoirs modeled by infinite collection of oscillators. The heat, Q, flowing across the oscillator in a time interval tau is a stochastic variable and we study the probability distribution function P(Q). We compute the exact generating function of Q at large tau and the large deviation function. The generating function has a symmetry satisfying the steady-state fluctuation theorem without any quantum corrections. The distribution P(Q) is non-Gaussian with clear exponential tails. The effect of finite tau and nonlinearity is considered in the classical limit through Langevin simulations. We also obtain the prediction of quantum heat current fluctuations at low temperatures in clean wires.
Description: Open Access.
ISSN: E-ISSN(s): 1079-7114
P-ISSN(s): 0031-9007
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Copyright: 2007 The American Physical Society
Appears in Collections:Research Papers (TP)

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