• Corpus ID: 119129350

A definition of thermodynamic entropy valid for non-equilibrium states and few-particle systems

@article{Beretta2014ADO,
  title={A definition of thermodynamic entropy valid for non-equilibrium states and few-particle systems},
  author={Gian Paolo Beretta and Enzo Zanchini},
  journal={arXiv: Mathematical Physics},
  year={2014}
}
From a new rigorous formulation of the general axiomatic foundations of thermodynamics we derive an operational definition of entropy that responds to the emergent need in many technological frameworks to understand and deploy thermodynamic entropy well beyond the traditional realm of equilibrium states of macroscopic systems. The new definition is achieved by avoiding to resort to the traditional concepts of "heat" (which restricts $a$ $priori$ the traditional definitions of entropy to the… 

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