Nonlinear superhorizon perturbation and nonlinear gauge transformation

Yuichi Takamizu, Atsushi Naruko, Misao Sasaki

研究成果: Paper査読

抄録

We develop a theory of nonlinear cosmological perturbations on superhorizon scales for a multi-component scalar field with a general kinetic term and a general form of the potential in the context of inflationary cosmology. We employ the ADM formalism and the spatial gradient expansion approach valid up to second-order in the expansion. We provide a formalism to obtain the solution in the multi-field case and also derive fully nonlinear gauge transformation rules valid through second-order. These fully nonlinear gauge transformation rules can be used to derive the solution in a desired gauge from the one in a gauge where computations are much simpler.

本文言語English
ページ数1
出版ステータスPublished - 2012 12 1
イベント22nd Workshop on General Relativity and Gravitation in Japan 2012, JGRG 22 - Hongo, Tokyo, Japan
継続期間: 2012 11 122012 11 16

Other

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

ASJC Scopus subject areas

  • 原子分子物理学および光学

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