Revising the predictions of inflation for the cosmic microwave background anisotropies.
Revising the predictions of inflation for the cosmic microwave background anisotropies.
复制标题
修改宇宙微波背景各向异性的暴胀预测。
DOI：
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发表时间：
2009
影响因子：
8.6
通讯作者：
L. Parker
中科院分区：
文献类型：
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作者：
I. Agulló;J. Navarro;G. Olmo;L. Parker
我们指出，如果考虑量子场重整化，并在哈勃半径交叉时间或它之后的几个e-折叠处计算反项，标量和张量功率谱的慢卷暴胀的预测将发生显着变化。这导致了张量-标量振幅比与谱指数的一致性条件的变化。对势varphi;{2}和varphi;{4}的重新检查表明，两者都与WMAP的五年数据相兼容。只有在通货膨胀结束后的更大时间内对反项进行评估时，人们才能恢复标准预测。这里提出的替代预测可能很快就会进入近期实验的测量范围。
We point out that, if quantum field renormalization is taken into account and the counterterms are evaluated at the Hubble-radius crossing time or few e-foldings after it, the predictions of slow-roll inflation for both the scalar and the tensorial power spectrum change significantly. This leads to a change in the consistency condition that relates the tensor-to-scalar amplitude ratio with spectral indices. A reexamination of the potentials varphi;{2} and varphi;{4} shows that both are compatible with five-year WMAP data. Only when the counterterms are evaluated at much larger times beyond the end of inflation does one recover the standard predictions. The alternative predictions presented here may soon come within the range of measurement of near-future experiments.