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arXiv 1012.5737hep-thastro-ph.COgr-qc
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共形标量场产生的标量微扰的性质

Properties of scalar perturbations generated by conformal scalar field

M. Libanov, S. Mironov, V. Rubakov

摘要:

当复共形标量场沿其负四次势滚下时,可能产生原始标量扰动。我们首先讨论这种情况下的特殊红外特性。然后,我们考虑模型中固有的统计各向异性。最后,我们讨论了标量微扰的非高斯性。由于对称性,双谱消失相同。给出了三谱的一般表达式,并给出了它在折叠极限下的显式。

英文摘要:

Primordial scalar perturbations may be generated when complex conformal scalar field rolls down its negative quartic potential. We begin with the discussion of peculiar infrared properties of this scenario. We then consider the statistical anisotropy inherent in the model. Finally, we discuss the non-Gaussianity of scalar perturbations. Because of symmetries, the bispectrum vanishes identically. We present a general expression for the trispectrum and give its explicit form in the folded limit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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