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2012

Toward an accurate Dark Matter power spectrum beyond BAO scales

Sugiyama, Naonori S., Futamase, Toshifumi

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We propose a new approximated expression for non-linear Dark Matter power spectrum much beyond BAO scales.

The proposed expression agrees with the result of N-body simulation with the accuracy better than 2 % up to k=1.0 [h/Mpc] and k=0.7 [h/Mpc] at z=3.0 and z=1.0, respectively.
Even at z=0.35, the accuracy remains within 10 % up to k=0.8 [h/Mpc].
In doing so, we used an approximation for the kernel functions used in the Standard Perturbation Theory (SPT) which is also used to prove the Reg PT proposed by Bernardeau et al.

Toward an accurate Dark Matter power spectrum beyond BAO scales · Around

Built on

D. J. Eisenstein and W. Hu, Astrophys. J. 496
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F. Bernardeau, S. Colombi, E. Gaztanaga, and R. Scoccimarro, Phys. Rept. 367
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D. J. Eisenstein et al. (SDSS), Astrophys. J. 633
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V. Springel, Mon. Not. Roy. Astron. Soc. 364
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Similar

M. Crocce, S. Pueblas, and R. Scoccimarro, Mon. Not. Roy. Astron. Soc. 373
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2008
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M. Crocce and R. Scoccimarro, Phys. Rev. D77
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E. Komatsu et al. (WMAP), Astrophys. J. Suppl. 180
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2009
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M. Crocce and R. Scoccimarro, Phys. Rev. D73
Cited in the paper.
M. Crocce and R. Scoccimarro, Phys. Rev. D73
Cited in the paper.

Then

F. Bernardeau, M. Crocce, and R. Scoccimarro, (2011), arXiv:1112.3895 [astro-ph.CO]
Original
2011
Later among the works it cites.
P. Valageas and T. Nishimichi, Astron.Astrophys. 527
Original
2011
Later among the works it cites.
A. Taruya, F. Bernardeau, T. Nishimichi, and S. Codis, (2012), arXiv:1208.1191 [astro-ph.CO]
Original
2012
Closest in time.
N. S. Sugiyama and T. Futamase, (2012), arXiv:1210.1663 [astro-ph.CO]
Original
2012
Closest in time.

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