Infrared divergence of pure einstein gravity contributions to the cosmological density power spectrum

Hyerim Noh, Donghui Jeong, Jai Chan Hwang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We probe the pure Einstein gravity contributions to the second-order density power spectrum. On the small scale, we discover that Einstein's gravity contribution is negligibly small. This guarantees that Newton's gravity is currently sufficient to handle the baryon acoustic oscillation scale. On the large scale, however, we discover that Einstein's gavity contribution to the second-order power spectrum dominates the linear-order power spectrum. Thus, the pure Einstein gravity contribution appearing in the third-order perturbation leads to an infrared divergence in the power spectrum.

Original languageEnglish (US)
Article number021301
JournalPhysical Review Letters
Volume103
Issue number2
DOIs
StatePublished - Aug 6 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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