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Ernst, M. H. and Brito, Ricardo (2006) New GreenKubo formulas for transport coefficients in hardsphere, Langevin fluids and the likes. Europhysics Letters, 73 (2). pp. 183189. ISSN 02955075

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Official URL: http://iopscience.iop.org/02955075/73/2/183/pdf/02955075_73_2_183.pdf
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http://iopscience.iop.org/  Publisher 
http://www.arxiv.org  Organisation 
Abstract
We present generalized GreenKubo expressions for thermal transport coefficients mu in nonconservative fluidtype systems, of the generic form mu = mu(infinity)+ integral(o)(infinity) dtV(1) [Iepsilon exp[tL] I](0), where exp[tL] is a pseudostreaming operator. It consists of a sum of an instantaneous transport coefficient mu(infinity), and a time integral over a time correlation function in a state of thermal equilibrium between a current I and its conjugate current Iepsilon. This formula with mu(infinity) not equal 0 and Iepsilon not equal I covers vastly different systems, such as strongly repulsive elastic interactions in hardsphere fluids, weakly interacting Langevin fluids with dissipative and stochastic interactions satisfying detailed balance conditions, and "the likes", defined in the text. For conservative systems the results reduce to the standard formulas.
Item Type:  Article 

Additional Information:  ©EDP Sciences. The authors thank J. Piasecki and P. Español for bringing refs. [4] and [6], respectively, to their attention. MHE is supported by Secretaría de Estado de Educación y Universidades (Spain), and RB by the Universidad Complutense (Profesores en el Extranjero). This work is financed by the research project FIS2004271 (Spain). 
Uncontrolled Keywords:  Dissipative particle dynamics 
Subjects:  Sciences > Physics > Thermodynamics 
ID Code:  21342 
Deposited On:  17 May 2013 10:10 
Last Modified:  24 Jul 2018 11:06 
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