The Einstein relation connecting the diffusion constant and the mobility is violated beyond the linear response regime. For a colloidal particle driven along a periodic potential imposed by laser traps, we test the recent theoretical generalization of the Einstein relation to the nonequilibrium regime which involves an integral over measurable velocity correlation functions. © 2007 The American Physical Society.
CITATION STYLE
Blickle, V., Speck, T., Lutz, C., Seifert, U., & Bechinger, C. (2007). Einstein relation generalized to nonequilibrium. Physical Review Letters, 98(21). https://doi.org/10.1103/PhysRevLett.98.210601
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