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Kolmogorov-Sinai entropy of the dilute wet granular gas

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Fingerle, A., Herminghaus, S., & Zaburdaev, V. (2005). Kolmogorov-Sinai entropy of the dilute wet granular gas. Physical Review Letters, 95(19): 198001. doi:10.1103/PhysRevLett.95.198001.


Cite as: http://hdl.handle.net/21.11116/0000-0007-F0EA-2
Abstract
We present an analytical expression for the Kolmogorov-Sinai entropy of a wet granular gas. The influence of the liquid is modeled by a hysteretic interaction force. For the dilute limit (two-particle collisions only), we find a simple expression accounting for the contribution of both the scattering states and the bound states in arbitrary dimensions. It is shown that the system is significantly more chaotic than a gas of (dry) hard spheres, as reflected by a pronounced increase of the Kolmogorov-Sinai entropy.