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arXiv 1008.2113gr-qc
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具有感生质量项的电磁场:旋量场情形

Electromagnetic field with induced massive term: Case with spinor field

Yu. P. Rybakov, G. N. Shikin, Yu. A. Popov, Bijan Saha

摘要:

我们考虑一个旋量与电磁场的相互作用系统,它明显依赖于电磁势,即,破格不变性的相互作用。相互作用的拉格朗日量的选择是以这样一种方式,即电磁场方程获得一个附加项,在某些情况下,该附加项与电磁场的矢势成比例。该方程可以解释为具有诱导非平凡静止质量的光子的运动方程。我们在Bianchi I型(BI)宇宙学模型的范围内考虑了旋量场和标量场相互作用的系统。结果表明,由于相互作用,电磁场在$t \to \infty$处消失,并发生膨胀的各向同性过程。

英文摘要:

We consider an interacting system of spinor and electromagnetic field, explicitly depending on the electromagnetic potentials, i.e., interaction with broken gauge invariance. The Lagrangian for interaction is chosen in such a way that the electromagnetic field equation acquires an additional term, which in some cases is proportional to the vector potential of the electromagnetic field. This equation can be interpreted as the equation of motion of photon with induced non-trivial rest-mass. This system of interacting spinor and scalar fields is considered within the scope of Bianchi type-I (BI) cosmological model. It is shown that, as a result of interaction the electromagnetic field vanishes at $t \to \infty$ and the isotropization process of the expansion takes place.

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