Implications of Planck results for models with local type non-Gaussianity

作者：Suyama Teruaki^*; Takahashi Tomo; Yamaguchi Masahide; Yokoyama Shuichiro

来源：Journal of Cosmology and Astroparticle Physics, 2013, 2013(6): 012.

DOI：10.1088/1475-7516/2013/06/012

• inflation
• non-gaussianity
• cosmological perturbation theory

We discuss implications of Planck results for models with local type non-Gaussianity. In light of the recent results of the Planck satellite, we constrain model parameters of several representative models and give the prediction of trispectrum, in particular, g(NL). We also consider interesting possibilities that trispectrum appears as the first signature of the non-Gaussianities of the curvature perturbations, that is, f(NL) is small while g(NL) can be significantly large.

• 出版日期2013-6