Abstract
In classical thermodynamics the entropy is an extensive quantity, i.e., the sum of the entropies of two subsystems in equilibrium with each other is equal to the entropy of the full system consisting of the two subsystems. The extensitivity of entropy has been questioned in the context of a theoretical foundation for the so-called distributions, which describe plasma constituents with power-law velocity distributions. We demonstrate here, by employing the recently introduced regularized distributions, that entropy can be defined as an extensive quantity even for such power-law-like distributions that truncate exponentially.
- Received 19 July 2018
DOI:https://doi.org/10.1103/PhysRevE.98.053205
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