Toward a No-go theorem for accelerating universe by nonlinear backreaction

Masumi Kasai, Hideki Asada, Toshifumi Futamase

Research output: Contribution to conferencePaperpeer-review

Abstract

Backreaction of nonlinear inhomogeneities to the cosmic expansion is analyzed in the framework of general relativity. In order to pay special attention to the gauge issues, the calculation is done in the Newtonian gauge. By defining the spatially averaged matter energy density as a conserved quantity in the large comoving volume, it is shown that the nonlinear backreaction neither accelerates nor decelerates the cosmic expansion in a matter-dominated universe. The conclusion is consistent with the previous works done in the comoving synchronous gauge. Although our work does not give a complete proof, it strongly suggest the following no-go theorem: no cosmic acceleration occurs due to nonlinear backreaction via averaging.

Original languageEnglish
Pages104-106
Number of pages3
Publication statusPublished - 2005 Dec 1
Event15th Workshop on General Relativity and Gravitation in Japan, JGRG 2005 - Tokyo, Japan
Duration: 2005 Nov 282005 Dec 2

Other

Other15th Workshop on General Relativity and Gravitation in Japan, JGRG 2005
CountryJapan
CityTokyo
Period05/11/2805/12/2

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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