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

Journal Article · Sat Jun 01 00:00:00 EDT 2013 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2013/06/012· OSTI ID:22282902

Suyama, Teruaki ^[1]; Takahashi, Tomo ^[2]; Yamaguchi, Masahide ^[3]; Yokoyama, Shuichiro ^[4]

---

1. Research Center for the Early Universe, Graduate School of Science, The University of Tokyo, Tokyo 113-0033 (Japan)
2. Department of Physics, Saga University, Saga 840-8502 (Japan)
3. Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551 (Japan)
4. Institute for Cosmic Ray Research, The University of Tokyo, Kashiwa 277-8582 (Japan)

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{sub NL}. We also consider interesting possibilities that trispectrum appears as the first signature of the non-Gaussianities of the curvature perturbations, that is, f{sub NL} is small while g{sub NL} can be significantly large.

• OSTI ID: 22282902
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 06; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
COSMOLOGICAL MODELS
COSMOLOGY
ENERGY SPECTRA
PERTURBATION THEORY