Entropy of plasmas described with regularized κ distributions
Entropy of plasmas described with regularized
κ
distributions
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用正则化 κ 分布描述的等离子体熵
DOI：
10.1103/physreve.98.053205
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发表时间：
2018
影响因子：
2.4
通讯作者：
Z. Vörös
中科院分区：
文献类型：
--
作者：
H. Fichtner;K. Scherer;M. Lazar;H. Fahr;Z. Vörös
在经典热力学中，熵是一个广延量，即相互平衡的两个子系统的熵之和等于由这两个子系统组成的整个系统的熵。熵的可拓性在所谓的$\kappa$-分布的理论基础中受到了质疑，该分布描述了幂律速度分布的等离子体成分。我们在这里证明，通过采用最近推出的{\它正则化$\kappa$-分布}，熵可以被定义为一个广泛的量，即使是这样的幂律分布，截断指数。
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 $\kappa$-distributions, which describe plasma constituents with power-law velocity distributions. We demonstrate here, by employing the recently introduced {\it regularized $\kappa$-distributions}, that entropy can be defined as an extensive quantity even for such power-law-like distributions that truncate exponentially.
影响因子：
8.6
作者：
Treumann, R. A.;Jaroschek, C. H.
通讯作者：
Jaroschek, C. H.