Kumaran, V (2011) Fluctuation-dissipation relation for nonlinear Langevin equations. In: Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 83 (4, Par).
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It is shown that the fluctuation-dissipation theorem is satisfied by the solutions of a general set of nonlinear Langevin equations with a quadratic free-energy functional (constant susceptibility) and field-dependent kinetic coefficients, provided the kinetic coefficients satisfy the Onsager reciprocal relations for the irreversible terms and the antisymmetry relations for the reversible terms. The analysis employs a perturbation expansion of the nonlinear terms, and a functional integral calculation of the correlation and response functions, and it is shown that the fluctuation-dissipation relation is satisfied at each order in the expansion.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Mechanical Sciences > Chemical Engineering|
|Date Deposited:||30 May 2011 07:48|
|Last Modified:||30 May 2011 07:48|
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