类Chern-Simons有效相互作用引起的暴胀产生的大尺度磁场
Large-scale magnetic fields from inflation due to Chern-Simons-like effective interaction
摘要：
讨论了在暴胀宇宙学中，通过$CPT$ -偶数维6 Chern-Simons类有效相互作用与费米子流的共形不变性被破坏而产生的大尺度磁场.结果表明，即使有效相互作用的尺度为普朗克尺度，也能产生目前场强为$\sim 10^{-9}$ G的1 Mpc尺度的磁场.
英文摘要：
We discuss the generation of large-scale magnetic fields due to the breaking of the conformal invariance in the electromagnetic field through the $CPT$-even dimension-six Chern-Simons-like effective interaction with a fermion current in inflationary cosmology. It is shown that the magnetic fields on 1Mpc scale with the field strength of $\sim 10^{-9}$G at the present time can be generated even for the scale of the effective interaction being the Planck scale.
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