On the non-linear scale of cosmological perturbation theory

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Padé improved PT vs N-body1.4z⩵0.375PkPnowigglek1.3 1.2 1.1 1.0 0.9 0.00 0.05 0.10 0.15 0.20 0.25 0.30khMpcblack=SPT, blue=Padé improved PT, red=N-body Horizon Run 2Mathias Garny (DESY Hamburg / CERN)On the non-linear scale of cosmological perturbation theory
Padé improved PT vs N-body1.4z⩵0PkPnowigglek1.31.21.11.0 0.90.00 0.05 0.10 0.15 0.20 0.25 0.30khMpcblack=SPT, blue=Padé improved PT, red=N-body Horizon Run 2Mathias Garny (DESY Hamburg / CERN)On the non-linear scale of cosmological perturbation theory
Page 1: On the non-linear scale of cosmolog
Page 4 and 5: Standard Perturbation TheoryPoisson
Page 6 and 7: Standard Perturbation Theory100Plin
Page 8 and 9: Standard Perturbation TheoryMany ap
Page 10 and 11: Loop expansion of PS in the limit o
Page 16 and 17: Padé ansatzGoal: improve convergen
Page 18 and 19: Result for Padé resummed small-k l
Page 22 and 23: ConclusionThree loop larger than on
Page 24 and 25: Expansion parameter∫ kσl 2 (k, z
Page 26 and 27: Padé improved PT vs N-body1.4z⩵0

On the non-linear scale of cosmological perturbation theory

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