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Vacuum bosonic currents induced by a compactified cosmic string in dS background
International Journal of Modern Physics D ( IF 2.2 ) Pub Date : 2020-09-10 , DOI: 10.1142/s0218271820501035
E. A. F. Bragança 1 , E. R. Bezerra de Mello 2 , A. Mohammadi 1
Affiliation  

In this paper, we study the vacuum bosonic currents in the geometry of a compactified cosmic string in the background of the de Sitter spacetime. The currents are induced by magnetic fluxes, one running along the cosmic string and another one enclosed by the compact dimension. To develop the analysis, we obtain the complete set of normalized bosonic wave functions obeying a quasiperiodicity condition. In this context, we calculate the azimuthal and axial current densities and we show that these quantities are explicitly decomposed into two contributions: one originating from the geometry of a straight uncompactified cosmic string and the other induced by the compactification. We also compare the results with the literature in the case of a massive fermionic field in the same geometry.

中文翻译:

dS背景下紧致宇宙弦引起的真空玻色子电流

在本文中,我们研究了德西特时空背景下压缩宇宙弦几何中的真空玻色子流。电流是由磁通量感应的,一个沿着宇宙弦运行,另一个被紧凑维度包围。为了进行分析,我们获得了符合准周期性条件的完整归一化玻色波函数集。在这种情况下,我们计算了方位角和轴向电流密度,我们表明这些量被明确地分解为两个贡献:一个源于直的未压实宇宙弦的几何形状,另一个由压实引起。我们还将在相同几何形状的大质量费米子场的情况下将结果与文献进行比较。
更新日期:2020-09-10
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