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
SN - 0031-9007
VL - 103
JO - Physical review letters
JF - Physical review letters
IS - 2
M1 - 021301
ER -