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On exact identity between thermodynamic and informatic entropies in a unitary model of friction

Lajos Diósi, Tova Feldmann, Ronnie Kosloff

quant-pharXiv:quant-ph/0505219

Abstract

An elementary collision model of a molecular reservoir is considered upon which an external field is applied and the work is dissipated into heat. To realize macroscopic irreversibility at the microscopic level, we introduce a ``graceful'' irreversible map which randomly mixes the identities of the molecules. This map is expected to generate informatic entropy exactly equal to the independently calculable irreversible thermodynamic entropy.

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