TY - JOUR

T1 - Infrared divergence of pure einstein gravity contributions to the cosmological density power spectrum

AU - Noh, Hyerim

AU - Jeong, Donghui

AU - Hwang, Jai Chan

PY - 2009/8/6

Y1 - 2009/8/6

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevLett.103.021301

DO - 10.1103/PhysRevLett.103.021301

M3 - Article

AN - SCOPUS:68649127091

VL - 103

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 2

M1 - 021301

ER -