New universal scaling laws of diffusion and Kolmogorov-Sinai entropy in simple liquids |
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Authors: | Samanta Alok Ali Sk Musharaf Ghosh Swapan K |
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Institution: | Theoretical Chemistry Section, RC &CD Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. |
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Abstract: | A new universal scaling law relating the self-diffusivities of the components of a binary fluid mixture to their excess entropies is derived using mode coupling theory. These scaling laws yield numerical results, for a hard sphere as well as Lennard-Jones fluid mixtures, in excellent agreement with simulation results even at a low density region, where the empirical scaling laws of Dzugutov Nature (London) 381, 137 (1996)]] and Hoyt, Asta, and Sadigh Phys. Rev. Lett. 85, 594 (2001)]] fail completely. A new scaling law relating the Kolmogorov-Sinai entropy to the excess entropy is also obtained. |
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