Testing the origin of primordial perturbation: Use of bi and tri-spectrum

Teruaki Suyama, Kazuhide Ichikawa, Masahiro Kawasaki, Kazunori Nakayama, Toyokazu Sekiguchi, Fuminobu Takahashi, Tomo Takahashi, Takahiro Tanaka, Yuki Watanabe, Masahide Yamaguchi, Jun'ichi Yokoyama, Shuichiro Yokoyama

Research output: Contribution to conferencePaperpeer-review

Abstract

Test of non-Gaussianity can be useful to reveal the origin of primordial perturbations. We can obtain information about number of fields contributing to the curvature perturbation by using fnl and taunl. Detection of all the non-linearity parameters greatly helps us constrain the model of the early Universe. Very soon, Planck results will tell us something.

Original languageEnglish
Number of pages1
Publication statusPublished - 2012 Dec 1
Event22nd Workshop on General Relativity and Gravitation in Japan 2012, JGRG 22 - Hongo, Tokyo, Japan
Duration: 2012 Nov 122012 Nov 16

Other

Other22nd Workshop on General Relativity and Gravitation in Japan 2012, JGRG 22
CountryJapan
CityHongo, Tokyo
Period12/11/1212/11/16

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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