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Higgs机制在量子场论中作用十分重要 ,它使规范场有了质量 .本文不引入协变导数 ,通过一类变换 ,得到了规范场的质量 相似文献
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首先讨论了一般量子系统的概率流的表达形式,鉴于对于二能级系统态函数的概率流文献中讨论的较少,本文通过定义一些新的变量,给出了二能级系统态函数概率流的新形式,这一新形式中不含有两个态矢的干涉项. 相似文献
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The topological expression of the reduced quantum trajectory is given by using C-mapping topological current theory. The topological expression is used in study of the coherence and the decoherence. We find the expression of vorticity for decoherence has a similar form as that for coherence. A topological reason leading to the decoherence is given and a new parameter is defined to indicate the coherence degree. The parameter is different from the damping factor because it relates to the topological structure of the reduced quantum trajectory. 相似文献
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