Primordial uctuations from nonlinear couplings
Primordial uctuations from nonlinear couplings
复制标题
非线性耦合的原始波动
DOI:
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发表时间:
1996
期刊:
影响因子:
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通讯作者:
S. Gonorazky
中科院分区:
文献类型:
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作者:
E. Calzetta;S. Gonorazky
We study the spectrum of primordial uctuations in theories where the in aton eld is nonlinearly coupled to massless elds and/or to itself. Conformally invariant theories generically predict a scale invariant spectrum. Scales entering the theory through infrared divergences cause logarithmic corrections to the spectrum, tilting it towards the blue. We discuss in some detail whether these uctuations are quantum or classical in nature.