Thermodynamic efficiency of information and heat flow

@article{Allahverdyan2009ThermodynamicEO,
  title={Thermodynamic efficiency of information and heat flow},
  author={Armen E. Allahverdyan and Dominik Janzing and G. Mahler},
  journal={Journal of Statistical Mechanics: Theory and Experiment},
  year={2009},
  volume={2009},
  pages={09011}
}
A basic task of information processing is information transfer (flow). Here we study a pair of Brownian particles each coupled to a thermal bath at temperatures T1 and T2. The information flow in such a system is defined via the time-shifted mutual information. The information flow nullifies at equilibrium, and its efficiency is defined as the ratio of the flow to the total entropy production in the system. For a stationary state the information flows from higher to lower temperatures, and its… 

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