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Infrared divergence of pure Einstein gravity contributions to cosmological density power spectrum by Noh, Hyerim; Jeong, Donghui; Hwang, Jai-chan is a scholarly article available to read on EtoBox.

What is Infrared divergence of pure Einstein gravity contributions to cosmological density power spectrum about?

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

Author

Noh, Hyerim; Jeong, Donghui; Hwang, Jai-chan

Published

2009

Language

EN