Gravitons Enhance Fermions during Inflation
Gravitons Enhance Fermions during Inflation
复制标题
引力子在暴胀期间增强费米子
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
R. Woodard
中科院分区：
文献类型：
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作者：
S. Miao;R. Woodard
我们在最简单的规范中求解了无质量费米子在膨胀过程中的有效狄拉克方程，包括了量子引力的所有单圈修正。在后期，空间平面波的结果表现为经典解受依赖于时间的场强${Z}_{2}(t)=1\ensuremath{-}\frac{17}{4\ensuremath{\pi}}G{H}^{2}\mathrm{ln}(a)+O({G}^{2})$.重整化的影响。尽管数值系数不同，但这也是进行Hartree近似之后的结果。
We solve the effective Dirac equation for massless fermions during inflation in the simplest gauge, including all one loop corrections from quantum gravity. At late times the result for a spatial plane wave behaves as if the classical solution were subjected to a time-dependent field strength renormalization of ${Z}_{2}(t)=1\ensuremath{-}\frac{17}{4\ensuremath{\pi}}G{H}^{2}\mathrm{ln}(a)+O({G}^{2})$. We show that this also follows from making the Hartree approximation, although the numerical coefficients differ.