On the physical significance of infra-red corrections to inflationary observables
On the physical significance of infra-red corrections to inflationary observables
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DOI：
10.1088/1475-7516/2008/01/015
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发表时间：
2007-11
影响因子：
6.4
通讯作者：
N. Bartolo;S. Matarrese;M. Pietroni;A. Riotto;D. S. P. D. Padova-D.-S.-P.-D.-Padova-2059864405;I. Infn;Padova;I. Cern;Switzerland Centre for Theoretical Cosmology;Cambridge;UK.
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文献类型：
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作者：
N. Bartolo;S. Matarrese;M. Pietroni;A. Riotto;D. S. P. D. Padova-D.-S.-P.-D.-Padova-2059864405;I. Infn;Padova;I. Cern;Switzerland Centre for Theoretical Cosmology;Cambridge;UK.
暴胀观测，如功率谱，计算在一阶和高阶回路水平似乎是困扰大红外校正。在这个简短的说明中，我们指出，这些大的红外修正只出现在数量上是不能直接观察到的。这与关于红外效应的一般预期是一致的。
Inflationary observables, like the power spectrum, computed at one-order and higher-order loop level seem to be plagued by large infra-red corrections. In this short note, we point out that these large infra-red corrections appear only in quantities which are not directly observable. This is in agreement with general expectations concerning infra-red effects.