LETTER TO THE EDITOR: Shafranov's virial theorem and magnetic plasma confinement
LETTER TO THE EDITOR: Shafranov's virial theorem and magnetic plasma confinement
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给编辑的信：沙弗拉诺夫的维里定理和磁等离子体约束
DOI：
10.1088/0305-4470/35/11/101
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
P. Rajan
中科院分区：
文献类型：
--
作者：
L. Faddeev;L. Freyhult;A. Niemi;P. Rajan
Shafranov的维里定理意味着非平凡的磁流体动力学平衡配置必须由外部提供的电流支持。在这里，我们将维里定理推广到场论，它与德里克关于孤子稳定性的标度论证有关。然后，我们采用维里参数调查一个现实的场理论模型的两个组件的等离子体，并得出结论，稳定的局域孤子可以存在于大部分的有限密度等离子体。这些孤子需要一个非平凡的电场，这意味着纯粹的磁流体力学参数是不足以描述稳定的，非平凡的结构内的大部分等离子体。
Shafranov's virial theorem implies that nontrivial magnetohydrodynamical equilibrium configurations must be supported by externally supplied currents. Here we extend the virial theorem to field theory, where it relates to Derrick's scaling argument on soliton stability. We then employ virial arguments to investigate a realistic field theory model of a two-component plasma, and conclude that stable localized solitons can exist in the bulk of a finite-density plasma. These solitons entail a nontrivial electric field, which implies that purely magnetohydrodynamical arguments are insufficient for describing stable, nontrivial structures within the bulk of a plasma.