TY - JOUR
T1 - Damping of the baryon acoustic oscillations in the matter power spectrum as a probe of the growth factor
AU - Nomura, Hidenori
AU - Yamamoto, Kazuhiro
AU - Nishimichi, Takahiro
PY - 2008/10/1
Y1 - 2008/10/1
N2 - We investigate the damping of the baryon acoustic oscillation (BAO) signature in the matter power spectrum due to the quasi-non-linear clustering of density perturbations. On the basis of the third-order perturbation theory, we construct a fitting formula for the damping in an analytic way. This demonstrates that the damping is closely related to the growth factor and the amplitude of the matter power spectrum. Then, we investigate the feasibility of constraining the growth factor through a measurement of the damping of the BAO signature. An extension of our formula including higher order corrections of density perturbations is also discussed.
AB - We investigate the damping of the baryon acoustic oscillation (BAO) signature in the matter power spectrum due to the quasi-non-linear clustering of density perturbations. On the basis of the third-order perturbation theory, we construct a fitting formula for the damping in an analytic way. This demonstrates that the damping is closely related to the growth factor and the amplitude of the matter power spectrum. Then, we investigate the feasibility of constraining the growth factor through a measurement of the damping of the BAO signature. An extension of our formula including higher order corrections of density perturbations is also discussed.
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U2 - 10.1088/1475-7516/2008/10/031
DO - 10.1088/1475-7516/2008/10/031
M3 - Article
AN - SCOPUS:56449092835
SN - 1475-7516
VL - 2008
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 10
M1 - 031
ER -